When you're gay and you are dating someone from the opposite gender just to hide that you're gay.
Henry- "Dang, Peter isn't gay. I kind of have a crush on him."
Sierra- "Don't worry, Gina is just his shadow hoe."
Thirsy Ass Bitch, also can be used as Thottie Ass Bitches. Usually pronounced as tab.
Elizabeth- You know what you are?
Hannah- What?
Elizabeth- You're a TAB.