tongue penetration - pretty much means eating out. As in licking a chick's vagina to give her pleasure.
Guy " Dude can i t.p. you?"
Girl "What's that?"
Guy " You know tongue penetration."
Girl " Ahh hell no!!!!" * slaps guy*
Girl "What's that?"
Guy " You know tongue penetration."
Girl " Ahh hell no!!!!" * slaps guy*
by Savilicous December 20, 2006