A really inflamed hemorrhoid.
Bob: I have a raging assteroid!

Rob: That really sucks!
by chunihan February 14, 2013
An asshole of asteroid or planetoid proportions.
Though not gifted with the ability to articulate his feelings in a socially aceptable way, Larry was able to compensate by behaving like an assteroid and getting his point across quite effectively.
by harry flashman July 13, 2003
What someone ingests to have an ass disproportionately large in comparison to their upper body.
From the looks of Kim Kardashian's backyard, she must be on some serious ASSteroids.
by Bitchtard Riot Starter November 14, 2011
A small fissure in the anus that causes stool passage to be painful. Not large enough to be a hemorrhoid.
I had a particularly painful crap today. I think I might have an assteroid.
by Keylimeypie November 19, 2007
A small fissure in the anus that causes stool passage to be painful. Not large enough to be a hemorrhoid.
I had a particularly painful crap today. I think I might have an assteroid.
by Keylimeypie November 19, 2007

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