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1. The act of titi-fucking a girl so hard that the head of your dick pokes her in the chin, making her head bounce up and down.

2. Another name for titi-fucking.
EXample 1:
J: "Guess what!?"
C: "What?"
J: "I was poking chin with your sister last night!"
C: " Fuck You.."

Example 2:
J: *from across the room* " DUDE I WANNA POKE YOUR SISTERS CHIN!!!"

S: " Go ahead! Good for you!"

S and J : "hahhahaha"

J: *slaps C in the face
by mr.meister0902 January 28, 2011
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