Definitions by GMLK

YSY

You single yet. When you know a really good looking girl who has a boyfriend and your in line for some fun.

Man: "Hey sexy, YSY?"
Female: "Nah, not yet"

Man: "Damn, can't wait to tap that"

YSY by GMLK May 14, 2013

YFU 

You freed Up? A question you ask an attractive person who is dating someone else whilst you wait your turn.

Man to Rihanna (off of music fame): "Hey YFU?"
Rihanna: "Sure am!"
Man: "Is it my turn?"

YFU by GMLK May 14, 2013