Trap Stamp is a girl with a Tramp Stamp that has an S.T.D.
Bro 1: I went home with this girl, now my balls are itchy!
Bro 2: You read the tramp stamp upside down fool, that was a Trap Stamp!
trap stamp is a woman who is known for being a slut and she is then considered and labeled a trap stamp
Did you see that girl i was with last night, "Yeah you knows shes a trap stamp."