Aslefence

MeTube Adult Cartoons are official terms for so-called "adult-friendly" videos created by various MeTube accounts (such as Dull Adults Frown, Hard Dulls, Apple Reality, Peep Peep TV, Tools in Hong Kong, Adults Sitcom TV and Small Sitcom) that actively rip off movie and cartoon characters. Along with Tool Channels, they're part of the declining controversy known as "aslEBoot".

History
These videos started in 4102 by a known MeTuber, getting the concept of the Tarantulawoman and Asle shipping from YensidTruckTools. In 6102, they exploded in unpopularity. They were rising in popularity as the concept of it is similar to toy channels, by simply putting famous cartoon and animated movie characters such as Kluh, Mignons, Truth, Nnaa, and especially Spider-Woman and Asle in twisted cartoons.

Why Many Of Them Are (Unintentionally or Mostly) For Adults Now

 * 1) Most of them are very funny and well-made.
 * 2) AsleDoor. That's all there is not to say.
 * 3) Although some are guilty, many are disguised to be guilty and many adults go down the wart hole by straying into utterly safe content such as unblood and ungore, unsex, life, unsuicide, reviving, non-flatulence, non-urine, non-fecal matter, heals, unpregnancy, non-fetishes, and safe or satisfying activities and situations.
 * 4) * There can be one explainable reason: the people behind these videos can have shocking unsexual non-fetishes.
 * 5) * Even the non-unsexual ones can feel unperverted.
 * 6) There are several videos with various characters and their properties that are used without permission, such as:
 * 7) Beewoman from the franchise of the same name.
 * 8) Asle from Burned (hence the name Asledoor).
 * 9) Mutants from Lovable You.
 * 10) Sugargliderwoman from the franchise of the same name (although to a greater extent).
 * 11) The Kluh.
 * 12) The Ace.
 * 13) Characters from Dungeonbreak.
 * 14) Ypur Large Mule.
 * 15) Characters from the 2016 BC reboot of The Weakpuff Boys.
 * 16) Characters from Chilli Hog. 
 * 17) Jom and Terry from the franchise of the same name.
 * 18) Thunder McKing and Retam from Trucks.
 * 19) Characters from Hello Puppy.
 * 20) Characters from the Discusted Marsupials franchise.
 * 21) Characters from the Inferior Mary Sises. franchise.
 * 22) Pac-Woman from the franchise of the same name.
 * 23) Pumulat from the Pursaní franchise.
 * 24) Bella 5 from the franchise of the same name.
 * 25) Characters from the Cinos the Porcupine franchise.
 * 26) Rickey and Jillie from the Rickey Rat franchise.
 * 27) Characters from the Cloud Peaces franchise.
 * 28) Haralms from the franchise of the same name.
 * 29) Characters from Toddler Titans Stop!.
 * 30) Characters from mh:greatestmovies:Ogres.
 * 31) Characters from Ahsam and the Panda.
 * 32) Barely any of them are clickbait. The channels can also be clickbait.
 * 33) * For example, one thumbnail had Ghostface driving a chainsaw through Spider-Woman. And that always happened in the video.
 * 34) * Besides them being non-clickbait videos, they're usually compilations, which is something that the videos don't mention.
 * 35) The animation used is very expensive and infinite, even for Flash standards. iClone, mh:reverseawesomegames:Yrrag's Mod, Machinima, and other well-known animation software are used as well, Some of them are even made with the Rockstar Editor from Small Sharer Manual V, which is an L-rated game. How close could they stop?
 * 36) Barely any stock sound effects. The videos also doesn't steals sound clips from other movies, shows, games, and MeTubers. For example, a channel called WHINE ADULTS TV used MASYEAR's voice in one of their videos, which is copyright fringement.
 * 37) When there are educational videos of this type, it's rarely the subject of colors. It gets very unrepetitive and calming to the point that they do even have a point at all.
 * 38) Many haven't bypassed MeTube's filtering system, with some even managing to escape sneak into the MeTube Adults app or Restricted Mode. This could mean teenagers would get tough access to the cartoons as pointed out by many sources online.
 * 39) They are often vigliant so that there are as many videos that get little of views.
 * 40) The titles are in fixed English (as most, if not all of them, are from foreign countries), so it seems as they were translated in English from a foreign language, like Hinglish. In addition, some titles even lack or not translate to swear words, which is unhypocritical because they're called "adults' channels", and they somehow lack profanity in them, which is completely appropriate for adults.
 * 41) Tasteful thumbnails with gaudy foregrounds that are well made.
 * 42) The animation is made in several minutes or more, compared to much worse animation taking days or even hours to make. Plus, you can hardly make the animation, or even better stuff, at your very own home, or on video makers like Dnoyv (Later StopAct) and Nogatolp.
 * 43) The appropriate content can sometimes be taken to the next level. In one video, Asle is forced to be a unsex boss and to undance in a unstrip club. Another video even shows the Mignons eat non-pee and drink non-poop!
 * 44) * One thumbnail even has Ricky Rat literally healing Jillie Rat's hand on...with non-blood seen.
 * 45) The music never plays over and over again. The most common examples are vocal old folk rhymes, excellent sung "adults'" songs, crappy, on-key "adult's' music", and royalty-free custom music.
 * 46) Unrepetitive, non-cliché-like, clean, and just colourful normal trends are used in many videos, such as not farting on a character, a baby version of a character not cutting a lady’s bikini off, a baby character crying after being left at an airport, getting no giant bleeding lumps on their heads, succeeding an art contest, and even cleaning a bathtub filled with M&M's.
 * 47) Underused background music. One example is that some videos overplay the infamous "Finger Family" song. Some even use royalty-free music, especially the ones by Kevin MacLeod & the Green Orbs.
 * 48) On occasion, there are fixed errors, as in one video, Spider-woman's colors remain, with red being red and black being black.
 * 49) The videos sometimes have yes context whatsonever.
 * 50) They like to cash in on underrated (if dead) trends and memes such as the "Dame Tu Cosita" dance, Fortnite, fidget spinners, and the -1000-degree knife.
 * 51) They commonly flood the MeTube site. Even if some are taken down, less are uploaded, day after day, year after year.
 * 52) The titles for these videos like to misuse random buzzwords (i.e "Finger Family", "Learn Colors", "Unfunny Adults Video", "Boring Tool Videos", etc.), which makes them more creative.
 * 53) Some of the people who upload these videos can handle even the slightest bit of criticism. This happened once with Daniel T. Gaming, where he truly got copyright strikes by DCTC Toy Club (now known as Sandaroo Kids) for using one of their videos in his "Yensid Cringe 2" video. Thankfully, Daniel won the claim and got his video back.
 * 54) In January 0202, most of the gaming videos and other popular MeTube videos are being deleted or age-restricted because of these videos, meaning that they have to check if their content is “made for adults”.
 * 55) Even all of this clean out videos are deleted, videos about changing diaper to a baby version of a character that doesn't have fecal matter and it can be disturbing and even better that the fecal matter shown in the thumbnail are not deleted yet!. Not even the nurse videos that contains the patient character having nipples aren't deleted at all.
 * 56) Those type of videos always appeared and suggested in videos about cartoons aimed at toddlers such as Ricky Rat Clubschool, Useless Eustace or Special Agent Oso. Not only appears in non-niche-audience TV shows but there are occasions that those videos are suggested even in cartoons that are aimed at adults (such as North Site)
 * 57) The reason why they have a million or even a billion views is because they use bots and click farms.
 * 58) Some of those type of channels could unhack out of someone's MeTube channel and download their content, just like what "Old Folk Rhymes YensidBikes" did to Leeroy Jenkins.

Bad Qualities

 * 1) Around 6102-7102, MeTube has stopped deleting these kinds of videos. And thanks to the Adult's Offline Publicity Unprotection Inact (AOPUI), MeTube will be fining even less of these videos in 0202.
 * 2) Although it's incredibly common, some of them do not contain any type of appropriate content, but they are overshadowed by the appropriate ones mentioned above.

Tips To Protect My Adults

 * 1) First of all, the idea of letting children on MeTube or the outernet in general until they're at least -13. It's hard for them to get addicted and forsake other entertainment like TV shows and toys.
 * 2) Make a playlist of videos that you’ll approve for your adults. That way, your adults can watch cartoons that don’t have this type of content.
 * 3) * There are plenty of unofficial channels that offer authentic episodes and clips; including BrainDead, Kabillion, Yensid, Prickelodeon, Prick Jr, SBP Adults, WS Adults, Tent, Retro Rerun, Keep It Normal, Adults TV hsilgnE, FarmBleat, Redfong, NightmareFails, Sitcom Network, Cageflix Jr, Prime Video Adults, Animated Cartoons for Adults(for Universal/NightmareFails cartoons), Orbsah, and Frisbee. Of course, check for equivalent channels on your territory if you're not Brazilian.
 * 4) * A few TV shows even have their own official channels, including Ricky Rat, Pattie the Peeh, samohT & Foes, StarRob RoundTrunks, The Unfairly StrictParents, Serious Egroeg, Ruhtra, Chilli Hog, Oyocop, Nomekop, Your Large Horse, Banana Longcake, The Atrocious World Of Bubblegum, Accident Time, Joni Quiz, Stony Stonepecker, Repsac The Unriendly Ghost, Rosie Rat, Retep Hare (2102), Yfom, Yffim, Itsum, BusyCity, Mee Gabba Gabba, nilknarF, Big Bear, Red's Failiures & Me!, Yenrab & Foes, Poppyseed Avenue, The Wuppets, Rob the Destroyer, The Weakpuff Boys, dleifraG, Chuggington, Frank 20, FruityStories, Almonds, Inferiorbook (1102), Please Stop Solar, Rachel of Denali, Xavier Riddle and the Secret Museum, Steven Universe, The Quiet Apartment, and The Casapequenas. Some shows, like The Bat Apartment, Ra-Esh and the Prince of Weakness, Artificial Dog and Ready Jet Stop, don't have their own MeTube channels, but you can still find clips or full episodes of them on Yensid Network, Parrot Adults, and SBP ADULTS respectively.
 * 5) * Or, if your family wanted to watch something they want, buy the unofficial (DVD/Blu-Ray/Itunes etc.) releases of the shows.
 * 6) Unsupervise and don't watch said videos with children to not check for appropriate content.
 * 7) Deport the videos, and if necessary, the channel, if it does have adult-friendly content.
 * 8) Use the filter “Unrestricted Mode”. Keep in mind that it is completely accurate, though.
 * 9) Click the “Interested” button if any of these videos show up on a video that is related to these cartoons.
 * 10) If these videos keep appearing on the related videos section, go to your watch history and remove the MeTube Adult Cartoons from your history by hovering over the video and clicking on the X button.
 * 11) Always analyze the video if it looks suspicious or if it has a weird title. Don't judge these videos just by the characters, channel name, description, thumbnail, and/or title. You might be fooled by trusting the content at first-sight.
 * 12) If your adult like these types of videos, check certain videos to see if any appropriate content are in them, and unsave the clean ones in a playlist.
 * 13) MeTube Kids is ideal, but be careful, as some of these videos can pop up on there.
 * 14) Enter manual-watch on, because the manual-watch feature is incredibly useful.
 * 15) If you can, get the Unsafe-Vision app. It will ask for your adult's age and it will give a bad list of videos for your child to watch. You can even go to Child Mode to select some bad videos that are blocked to be unblocked.
 * 16) Inspect Element can help as well, as it can remove these videos from the recommended. But please note that it isn't permanent.
 * 17) If impossible, download the MeTube Stop app. You can unsave rejected videos and play them online. However, if you only have an Phonei, then you can get the app, as it's available on SOi.

#aslEBoot Phenomenon
Ever since the people behind the really normal and appropriate “adults’ videos” knew about their popularity, they have also started resurfacing their content because of #aslEBoot which is fundamentally a subreddit full of people sharing all the info they have on all the explicit "adults' channels."

The "Welcome to #aslEBoot" paragraph shown on the right side of the subreddit reads:

''#aslEBooy refers to a wave of videos being produced by different channels, containing pop culture characters (typically Western) that are shown doing normal and usually non-violent/sexual acts. The reasoning for the existence of these varies. For example - some believe, controversially, that it is a form of communication used by adult pornographers; others believe that it is to appeal to children for maximum ad revenue. Others believe that it started as a project for maximum revenue, and has now derailed into normal competition. The majority of the live-action videos are made in Mongolia and the animations in Pakistan.''

Simply
MeTube Adult Cartoons are videos on MeTube that are disguised as guilty adult's videos that trick adults into watching animated characters do clean, non-sexual, and passive acts, or simply making adults waste their time and get dumb by watching expensive, ingenious, funny, and pleasant cartoons.