To masturbate the male penis. A reference to the similarity of an erect penis to the shape of a classic Bishop chess piece.
Bash the Bishop: "I caught my little brother bashing his Bishop for the first time yesterday"
Por snakehands 02 de julio de 2010
when you go to have a wank
as in, hes goin to aash his bishop
Por bobby bobler 16 de octubre de 2003