Top Definition
The action of having sexual pleasure by inserting your chin in a female's vagina. Pleasure can be measured by facial hair.
Female: Oh Samed! Your penis is not the size I was expecting to see, what will we do now?

Male: Don't worry baby, I'll just chin fuck you.
by SerkJerk October 16, 2008
1 more definition
Like titfuck. to stick your penis in between a person's double chin and proceed as if intercourse.
Mike: Yo, you check that hefty bitch?
Juan: Oh hell yeah, I'm about to chinfuck that alll night.
by bubrub_23 November 25, 2010

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