It happens when something(Mostly tentacles and cum ) comes from a girl's anus . And it goes through the digestive system to the mouth
by ilzt Soul December 21, 2018
A term used in hentai for when an object, typically a penis or tentacle, goes through either the ass and comes out the mouth, or vice versa.
Jebediah: "Yo dude look, this girl is getting fucked up by these tentacles!"
Alex: "Woah man, keep your all-the-way-through fetish to yourself!"
Alex: "Woah man, keep your all-the-way-through fetish to yourself!"
by Rhoggedas March 14, 2022
tucker did an all the way through
by SHRECK IS SEXY November 18, 2021
"all the way through tentacle" is a phrase included in the hentai genre, where a tentacle inserts itself into a woman(typically a teenager)'s anus so far that it protrudes out of the mouth
by xXdekuboy69420Xx February 13, 2017
by time4sumFun March 21, 2014