Ugh. I need eye bleach. That comment was way too illustrative.

Which just goes to show how effective it will be. There's a bit in Chuck Palanuiks "Fight Club" that isn't in the movie. One of the characters is doing a catering job in a horrible and classist woman's mansion. To teach her a lesson he leaves a note next to her very expensive perfume collection, comprised of 100s of bottles of designer perfume: " I pissed in one of these bottles, good luck guessing which one" She ends up throwing every bottle in the trash. It's later revealed that the person didn't actually piss in a bottle at all.