Top definition
Describing something being eaten usually in a humourous way.
Someone may badly edit a picture and draw eyes mouth and teeth over it to show that the subject is being eaten. They would then write omnomnomnom on the picture.
by onlineamiga June 21, 2008
Get the mug
Get a omnomnomnom mug for your sister-in-law Helena.
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*

Joe: So how's that burrito?
Jack: Om nom nom nom!
Joe: So good, then?
by Infamyanonymous January 19, 2008
Get the mug
Get a om nom nom nom mug for your grandma Rihanna.
The sound made by a voraphile when joyously devouring someone.
*Jane sneaks up on alice and...*
Jane: mmmmmm, alice was good...
by Chazz3233 March 13, 2009
Get the mug
Get a om nom nom nom mug for your friend Rihanna.
The sound of someone eating typically a fat or obese person trying to chew far too much at once making the om nom nom nom sound.

"Om nom nom nom" is an onomatopoeia
Bill stuffs his face with cake, as he eats the sound resembles "om nom nom nom"
by Nicholas Busse December 08, 2007
Get the mug
Get a om nom nom nom mug for your dog Jerry.