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The tingly feeling you get in your butt after sitting for a long time. Also know as your butt falling asleep
We gotta get out of this car for a bit. I have a bad case of Assinosis.
Assinosis by Joonas4321 September 12, 2015
Related Words

Reverse Assmosis

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.
Reverse Assmosis by BDE84 July 20, 2018
Where's the lube? Gotta go to the fridge and use the next best thing - Mayonaise

Mayonaise + Lube = Assinaise
Assinaise by Astam Outh August 19, 2009

Assmosis 

the process of absorbing heat from a seat left by the person previously sitting in the seat
John: Hey, this seat is warm.
Franny: Lucky, you get assmosis.
Assmosis by Julie Parker December 23, 2013

Atrinosis 

1. Atrinosis is derived from the latin word
"ater atra atrum : dark"
and the greek based word
"gnosis:Intuitive apprehension of spiritual truths, an esoteric form of knowledge sought by the Gnostics"

Defined as a negative or 'dark' state of enlightenment, where one's newly found higher knowledge is poisoned by darkness that corrupts it. Considered a disease to some, and a perfect way to view life to others.

2. An extreme Metal band from Canton, Ohio with melodic and progressive influences.
Example 1: "Last night I reached a state of Atrinosis." "No shit dude, thats deep..kinda weird but still deep"

Example 2: "When is Atrinosis gonna release another song?" "No idea, they're lazy fucks"
Atrinosis by Sobersomeofthenever April 25, 2011

assmosis 

When your head is so far up another person's ass you can't think, hear or see for yourself and must connect telepathically with the person whom has let you stick your in there ass for these sensory inputs.
As the tail of the human centipede, Kendar was forced to rely on assmosis to know what was happening in the word around him.
assmosis by hot biscuits January 2, 2015
More from Urban Dictionary
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
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