Food, especially when speaking "lolcat". It's based on the "nom nom nom" onomatopoeia for eating.

When some little bitchboy is acting like a little tiny pee pee poo poo baby and messing up the group plans.

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".

An expression of eating, or a sound thereof. Also could mean a sexually suggestive action upon either a male or female, one would use the lips and not so much the teeth, avoicing a chomp chomp like action

1) The act of eating
2) An act of affection
3) A sound to express satisfaction through eating
4) The first sound made in the morning when you wake up next to the person you are twitterpated by.

A cute Imitation of the sound of a kitten or lolcat munching on a cheezburger. A cats' favorite food, apparently.

or nomming, nommed. basically a geeks way of saying to eat something. Or if that person is stuck on lolcat vocabulary.