Gumph

Pronounced: gumpf

It is someone whos smile goes above their eyes/nose so they look extremly happy but they are clearly faking their smile. Also when you say the word "gumph" it automaticly makes you put your bottom lip over your top lip and then when you smile you look like a gumph!
Person 1: That kid over there looks like a proper gumph!
Person 2: Yeh! His smile is soooo gumph
by RRazz May 25, 2009
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