Something that is extremely awesome
If you wanted to say that car is awesome you would say "That car is tit as fuck"
When you titty fuck a girl while having a dirty sanchez.
I would shit fuck tit Megan Fox
When you take a dump on a girl's chest, and titfuck her, using the poop as lubricant
Nolan: What did you guys do last night?
Damian: Dude she totally let dirty tit fuck her! It was awesome!
*Highfive
A girl that would make you cheat on your significant other. The girl tends to have big tits. Referring to Bombshell McGee.
*Jared eyes a jogger with intent*
Jared: "Tits fucking McGee!!!"