when you're making out with a chick, and you slide your hands down her pants and pinch her bare ass. UNDERBITE!!! see the intruder...
i gave my roommate's mom the underbite last night.
by nate fingerman July 17, 2006
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when your eating pussy and you get a mouthful of shit
Fuckin Bitch, I just got an underbite.
by AlBundyisgod1906 April 9, 2006
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When an inbred looking girl without teeth is going down on you and then sucks your balls from below, not under, like a fish to bait.
Ol' girl was going at me good and then dropped her dentures and hit me with an Alabama Underbite.
by Hoodlum Crew April 19, 2019
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Severe underbite -- when it smells like pussy but it tastes like shit.
She smells great but tastes funny -- I must have severe underbite.
by Al Berich October 3, 2020
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