the appartment i used to party in was non smoking, but we would shove people in the bathroom and hot box it
one time one of the guys in the bathroom got a phone call and it sounded kinda like this: "Ummm, I'm kinda in the shower with 5 other guys right now...let me call you back."
The person he was talking to knew that in the shower meant smoking, but it was definitely a funny thing to hear