I borrowed your back brush

A joke. When overnighting at a friend/girlfriend's place and you bathe or shower the next morning,you inform your host that you took the liberty of using their back brush.In most cases,the host will advise you that they don't own a back brush. You then ask,"Well,what is that loop-shaped brush in the container on the bathroom floor?" After they quit laughing,they'll say,"That's the fuckin' toilet brush,dumbass!" Guaranteed giggles every time.