1. When a man's penis is inserted forcibly between the breasts of a woman and is thrusted repeatedly.
2. An act of rape performed solely on the breasts.
"Tittie rape is a serious concern in this 'modern' 'society'."
Man: "Yo, Rachael, you were totally tittie fucked!"
Rachael: "Nuh uh man. I wasn't even aware. It was totally tittie rape"