the sound one makes when eating and wants to make everyone around them annoyed and desires to be obnoxious.
Mom: bob! eat your peas!
Bob: fine (eats a forkfull of peas)
Bob: om nom om nom
Mom: (gives bob the evil eye) bob!
Mom: Bob!
Bob: om nom om nom
Mom: one!
Bob: om nom om nom
Mom: two!
Bob: om nom om nom
Mom: three!!!!
Bob: om nom o-
(mom drags bob out by the ear and throws him in the trash)
(two seconds later the garbage truck goes by and takes bob)
by 500kit500 March 9, 2017
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the sound zombies make when chewing on your flesh.
Person:OMG a Zombie!!!! It's eating my brain!!!!
Zombie: OM NOM NOM!!!
by ana.lives October 11, 2009
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meaning food or eat. verb: nomming.

Girl: 'I need some om nom nom'
Boy: 'same, i haven't om nom nomed all day!'
by LucyxD March 29, 2008
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the sound that heavy in team fortress 2 makes when he chews a delicious sandvich. now it can also be used in any generally pleasant situation.
person 1: "I got a new girlfriend"
person 2: "congrats!"
person 3: "om nom nom..."
by what.the.fudge September 9, 2010
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A loud and sometimes annoying sound made when eating. It is also made when a large person sees food and runs over, stuffs it in their mouth and devours it like it was fancy food being eaten by a rich person.
Friend: Is that a raccoon in my trash?

Me: I dont know.

Friend: Oh my god it is.

Raccoon: OM NOM NOM
by i_dont_really_know August 14, 2011
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A: the sound cookie monster eats while eating a cookie

B: something you say when you are hungry or want food for some reason.. but i think thats the definition of hungry...

C: The name of a video

D: if you don't have anything else to say, say it, and voila! conversation,*NO refunds all standard carrier rates apply* jk

D: If you meet a new group of people, it COULD b used as an icebreaker, if all else fails... but don't be surprised if they dub you a freak

E: a fun thing to say
person1; om nom nom

person 2 rolls eyes

person1; what? i had nothing ELSE to say... :'(
by thegothicatheist April 11, 2010
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