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1.
A code word for anal intercourse. Mostly used in the company of others who may not approve of the act.

The roots are unknown to an extent but are being researched currently
person 1: Oh, did you wanna bushesh tomorrow?
person 2: what?
person 3: sure, why not.
person 2: what!?
person 1: never mind...
person 2: ... fine.
by Johnny Sage June 10, 2006