To make out with someone without the tongue. Much more enjoyable because tongues are nasty bacteria-filled sponges that get in the way when kissing passionately.
Because she didn't like making out with tongue, she and her boyfriend we om nomming to make it more enjoyable.
by heygirlheyradical April 9, 2012
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The action of kissing, biting, sucking, or other acts on another person that involve the mouth.
Joseph was going om nom all over Kristen's neck.
by roadrunner34 April 26, 2009
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A. A common phrase used by the heavy in Team Fortress 2. The line is usually executed upon eating a sandvich to boost his health.

B. The cutest and funniest girl on xbox live. She speaks her mind and can make any game fun to play. Known best for her adorable giggles and witty attitude.
A. Medic - "I NEED ASSISTANCE! I AM ON FIRE"
Heavy - "Baby man, Sandvich is MINE!" eats sammich, "om nom nom, om nom sandvich is DELICIOUS"
Medic dies.

B. Guy 1 - Dude I played with chick yesterday on L4D and she was possibly the funniest and most adorable person ever.
Guy 2 - That could have possibly been om nom sandvich, she's pretty epic.
by TheMilkyWayMan June 27, 2010
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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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