when an intense shit attack overwhelms you to the point where you'll shit in the river and wipe your ass with a rock.
after eating two dozen hot wings and jalapeno poppers, I had ass contractions like there was fire in my ass.
by zimdaddy August 16, 2003
1 more definition
When someone has severe gas or shit pains thay they feel like they are in labor.
Oh man, I can barely walk to the bathroom! These ass contractions are killing me!
by Cazador301 May 22, 2015