HMMM I like the old straight forward...you wanna fuck? Works best outside of bars where they have all male dance reviews and at about 2:00 a.m. For some reason, the woman are pretty rowdy and ready then.
I use this at a bar : "I bet you a beer that I can tell if your lying or not" he says ok and i introduce my self.. Then I ask" Do you have a boyfriend?" .
If she has boy friend she wont normally lie, about that. So you can easily figure out who is single with out buying beer for girl with a man....