I don't think I've ever gotten laid cause of my tongue piercing. Nobody even notices it! Just yesterday, I was in a pub, and talking with a friend I've known for 3 years(I've had the piercing for 4 years) and hes like "Wait a minute, do you have a tongue piercing? Since when??"
So as I said, piercing for me is a way of "Art". I've never gotten a piercing or tatto with the sole motive of getting laid.