7
The process by which a person's ass becomes moist through osmosis after prolonged contact with grass. Not to be confused with assmosis.
Z: G-dawg, how did your ass get so moist?

G: Ass-mosis of course.
by theHonestAbe September 08, 2012
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8
The process by which some people seem to absorb success and advancement by kissing up to the boss rather than working hard.
the guy sitting next to you suffers from assmosis
by Dawna March 07, 2006
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9
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."
Okay cowboy, let's go make love on the couch via assmosis.
by Mark H May 22, 2004
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10
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 October 02, 2007
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11
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 03, 2010
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12
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 November 28, 2007
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Get the assmosis neck gaiter and mug.
13
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
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