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when a person's gums take over their entire mouth and it makes you want to throw up looking at them. It is especially bad when they smile or even talking is really gross too.
Laura's gigantic gums are gummscusting.
by Kelly D February 10, 2006
4 4

Words related to gummscusting:

donkeymouth gumcusting gummalacious gummy gumstoobig