Top Definition
AKA Superman
FLawless hell of a Male

Your lucky if he's in your presences
very cool dude
Girl : damn he must be a wilbert
by baniz_loko October 24, 2011
When a straight heterosexual male accidentally sticks his thumb up another man's rectum, purely by mistake. Usually occurs in male community showers at gyms or prisons/correctional facilities and dark rooms.
As I entered the dark room, I slipped and fell on Greg's bed, accidentally giving him a wilbert.

As the doctor was checking my cheeks, he accidentally gave me a wilbert.
by Jim Bobbbb May 05, 2008
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