The sound made by someone or something eating.

Most commonly found in lolcats and similar macros. It usually translate as, "I am absorbed in eating this".

The phrase may relate to the sound Cookie Monster makes on Sesame Street when eating cookies.

Also "Om nom nom".
*picture of kitten asleep in food bowl*
"OM NOM NOM"

Joe: So how's that burrito?
Jack: Om nom nom nom!
Joe: So good, then?
by Infamyanonymous January 19, 2008
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The sound made when eating something (or someone). Can be referred to as "nomming" as a verb, ans is often pronounced int he sentence "om nom nom".
"Omg, there's someone eating my arm!"
*om nom nom*
"awwww :3"
by lol wut September 10, 2007
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Food, especially when speaking "lolcat". It's based on the "nom nom nom" onomatopoeia for eating.
I iz hungrey, can haz noms?
by ScoJo July 4, 2008
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When an Asian engages in intercourse with another person and/or object
Hey! Quit Nom Nomming with that fat chick!

He got his Nom Nom on with the dog yesterday.
by The Jesus Room June 17, 2011
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