Top Definition
Found predominately in rednecks – when the lower teeth grow or extend past the upper teeth. This condition, if not fixed at a young age can cause digestion problems and also increase the risk of biting one’s own tongue.
Did you see Billy?

No

He has the White Man's Under Bite! Damn!

Yea, dipshit bout bites his tongue off when he smiles...
by B. Hanback January 22, 2009

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