Elves; Pef. This one was often used in our Shadowrun games, but I won't elaborate on what it means. I'll give you a hint; it's an acronym. Our group was trying to find a cyberdoc, but the only name the GM gave us was his last name and first initial; A. Peff. We walk into a rather seedy bar & grille looking for this guy, and one player gets the brilliant idea of announcing in the middle of the main room; "Excuse me, we are looking for A. Peff. Has anyone here seen A. Peff?"
Needless to say, most of the patrons were elves and heavily armed ones at that. Boy, I hated our GM that day...