8 XXX : traphentai

This may be one of the most widely known trap images out there, it's part of a collection of gifs by a fan artist called Nikcib. https://chan.sankakucomplex.com/?tags=nikcib Apparently it's based off of this doujinshi ( Rankou Kyoushitsu | Promiscuity Classroom) https://nhentai.net/g/53933/ by po-ju. https://exhentai.org/g/307278/2215afcdbb/ (Sad Panda)
It's called promiscuity classroom. there were some pictures that were then animated.