When a girl lubes up a guys cock and gently grinds her ass cheeks on and gets him off. That or he lays his cock between her ass cheeks and strokes away without penetration.
Stacy has such a soft sexy ass. I love it when she lets me lube it up and lay my cock between those cheeks and grind on it for a great ass job.
by baadbaaadman October 8, 2008

describes a person with a really flat ass... as in an ass that looks like an aspirin, which is flat with a line down the center.
by nikki & lexy December 9, 2008

by Ahmed Saad Saad April 22, 2020

When spicy or bad foods cause indegestion leading to diarrhea. The common feeling of lava running out of your sphincter.
spicy food in , and spicy food out
"I dont think its a good idea to eat all this spicy food, you might get lava ass later."
"I dont think its a good idea to eat all this spicy food, you might get lava ass later."
by Loser471 October 4, 2015

The time it takes a fart or shart to be reduced to half its initial potency, typically measured in seconds.
Upon eating Thai food, Dr. Long Fat Wang discovered that the Ass-life of his farts increased by a solid 15 seconds.
by believeitsbutter January 14, 2013

by Amphibizzy March 7, 2017

by Jay02x June 13, 2020
