When two people engage in anal sex.
(called "assmosis" because the two lovers are absorbing each other's pleasure as they bump their ends)
Derived from the word "osmosis."
(called "assmosis" because the two lovers are absorbing each other's pleasure as they bump their ends)
Derived from the word "osmosis."
by Mark H May 22, 2004
Get the assmosismug. The process of previous farts in a seat, chair, couch, etc reverse cycling up someone’s butt and being farted again.
Dude, someone must have been ripping ass in this seat because I’ve got some serious reverse assmosis going on right now.
by BDE84 July 20, 2018
Get the Reverse Assmosismug. 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"
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.
I can't help that my ass has gotten bigger; it was assmosis.
by Serena Peterson January 3, 2009
Get the assmosismug. 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
Get the assmosismug. /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.
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."
"Bro that's not hygiene...That's assmosis."
by Faceofadeadstar July 21, 2025
Get the ASSMOSISmug. 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"
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.
I can't help that my ass has gotten bigger; it was assmosis.
by Serena Peterson January 6, 2009
Get the assmosismug. 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
Isaiah: Nah, it’ll be shit water. What’s the term? Osmosis?
AJ: Assmosis
by MotherfuckingSatan August 27, 2019
Get the Assmosismug.