This is a word describing someone who kisses up to girls/ tries to gain their attention hoping they'll get lucky.
Why it is "nutmuncher" instead of "vaginamuncher" I have no idea. It's just the way things are.
"Dude, Tom is such a nutmuncher."

"Yeah, for real."
by Dan.T January 11, 2007
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A Dork.
or
One who munches on nuts(not specifying what kind)
dude, zack is a nutmunch
by Jordan August 18, 2003
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