TPTP - Thumb Points to The Prize
Acronym Pick-Up Line is commonly used when a male has his hands in his pockets, yet his thumb discretely hangs outside his pocket and points towards his crotch.
Girl: How come your thumb is hanging out of your pockets?
Dude: TPTP baby!
Dude: Thumb Points to The Prize baby!
Girl: Mmm... alright I'll give you a blowjob