1 definition by Atrium's atrium
(n.) A humorous term used to describe an action in which before departing for a destination a person will make a mental checklist of any items needed or wanted on said travel; attained from the action of patting one's back pockets in order validate the items existence.
Bob: Have you done an ass check yet?
John: *pats pockets* keys...check, wallet....check, ass....check!
John: *pats pockets* keys...check, wallet....check, ass....check!
by Atrium's atrium January 21, 2011