bum swipe

A bum swipe is a maneuver, usually dared, in where the person involves has to rub their buttock as inconspiculously as possible against a designated member of the public, ideally without getting caught. As a game this is best performed in a busy public enviroment like a bar or a cinema.

Scott just bum swiped that police officer. Fuck sake whit a dong.

Maurice: Here Scott, I dare you to bum swipe the receptionist.

Bum swiped

A large animals use of their rear end to push a person out of the way.
Also is a technique used by dogs during play

My pony just bum swiped me when not wanting to get his rug on