When you wipe your ass and a finger pokes through the paper. From the cassock worn by bishops
Damn, I really gotta wash, I got a brown bishop.
by kintatama2 October 21, 2007
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To shake someone's hand after you've had your finger poke through toilet paper. Not usually done for real, just spoken to disgust your victim.
Dude, smell your hand. I just gave you a brown bishop.
by kintatama2 October 21, 2007
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