pink samurai

Two young men are in a bathroom; one, wearing a plaid shirt and yellow shorts, repeatedly swings a red and white object at the back of the other man, who is wearing a striped shirt and crouches to avoid the blows. The man in the striped shirt bends over and ducks as the other man swings the object, which appears to be a rolled-up item, in a looping motion. The setting is a small, unfinished bathroom with white tiled walls and a sink.