My dad had two Navajo college roommates that hated each other's guts. One day roommate #1 took the other guy's Scope bottle and urinated in it. For almost four months, he would watch intently as his roommate gargled it every morning.
Thanks, I am now cleaning Copehagen juice off my monitor!!!
We did that to a friend at church camp one time. He found out and temporarily lost his religion.
And it is so very difficult to whizz in a bottle of listerine while giggling and trying to remain quiet. lol