Frat tat 

When you or someone else puts out a cigarette, blunt, joint, etc. somewhere on your body

Damn! That frat tat hurt like a bitch!

Frat tat by Sign stealer November 26, 2019

Frat tat 

Tattoo of Greek letters, crest, or other Fraternity symbol on ones body.

What an idiot, that frat tat won't rub off!

Frat tat by Tree_PiKA September 22, 2009

Frat Tat 

A Frat Tat is when you put roofies and a young lady's drink, have sex with her and before she awakens from her roofie induced slumber, draw all over her face with a magic marker.

I'm not sure if I had a good time but I did wake up with a frat tat so how bad could it have been?

Frat Tat by Necronious January 25, 2012