Holding the hand in a fist to one's mouth to show a blowjob.
Person 1:"How do you show a blowjob?"
Person 2:"Well it's kind of like...numnumnum."
by Lys-Lys March 21, 2005
A noise made when you see an attractive member of the opposite sex.
1) "Wow, that Bosley girl sure has a cute face. Numnumnum."
by jkeelz April 10, 2008

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