assmosis

the gradual or unconscious assimilation of ideas while sitting on one's posterior in a classroom setting

While sitting and listening to the long lecture I seem to have retained much of the content by the process of assmosis.

by herbybell April 3, 2010

assmosis

the process of one's butt getting bigger just by standing beside those with bigger butts.
People with fat friends get bigger butts just by being around "fat asses"

Julie's butt got bigger every time she was near Jane because of assmosis.
I can't help that my ass has gotten bigger; it was assmosis.

by Serena Peterson January 6, 2009

Assiosis

a subtle IOU ( I owe you ) for booty

Example:
Daniel- hey thanks for helping me get in with Tessa

James- No problem bro you're gonna have to get me an Assiosis so were even
Daniel- Yes Assiosis indeed

by salmonella m&m December 13, 2015

Assmosis

It’s when a shit sits in a toilet bowl for too long and starts to dissolve and turn to shit water.

AJ: My fucking roommate left a shit in the bathroom this morning and I think it was clogged. I swear when I come back, it better not be there.
Isaiah: Nah, it’ll be shit water. What’s the term? Osmosis?
AJ: Assmosis

by MotherfuckingSatan August 27, 2019

ASSMOSIS

/ˈæs·moʊ·sɪs/
colloquial; pathological hygiene myth

Definition:
The delusional belief that standing in shower water alone effectively cleans the human anus, negating the need for direct contact, soap, or scrubbing. Most commonly found in adult males raised in environments where touching one’s own ass is considered a gateway to eternal damnation or mild gay panic.

“Yo, I ain’t tryna go near my hole like that, bro. The water gets it.”
"Bro that's not hygiene...That's assmosis."

by Faceofadeadstar July 21, 2025