Is someone with the so-called "tramp stamp" on her lower back really slut*y?

just curious....i go to a prestigious graduate school and there are 4 girls in my cl with a huge tramp stamp and they like to flaunt it by wearing short shirts as if they're making some sort of statement....hmm.....face-wise, they don't look sl*tty or even act sl*tty at all...or at least that's what i think. ;-) im sure they knew the negative connotation of getting a tat on their lower backs prior to getting one...