What one says when eating something very good, or when eating quickly.

Onomatopoeia for Cookie Monster's war cry when invading the cookie jar.

A vague reference to oral sex, especially on a female.
Person one: Hey, have you tried these new cookies? They have fudge, caramel, and nuts on the inside, outside, AND in the chocolate chips themselves! Here, I brought some for
Person Two: *OMNOMNOMNOMNOMNOMNOM*

Person One: GOSH I SURE HOPE NOBODY TAKES THIS GIANT COOKIE I'M LEAVING ON THE COUNTER.
Cookie Monster: *Swoop* *Grab* *Bulimia'd* OMNOMNOMNOMNOM.
by Iggor November 10, 2006
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1. Eating something very fast or messily
2. Used to describe someone sexy
3. Used to describe making out
4. Basically coined by Cookie Monster
1. "Mmm, cookies." *omnomnom*
2. "Ooh, lookit that yummy guy over there." "Mmm, omnomnom."
3. "It was so gross. They were kissing and it was like, 'OMNOMNOM'"
4. "Cookie, cookie, cookie starts with C! OMNOMNOMNOM!"
by LammySees June 23, 2008
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1. The word that describes eating on the internet

2. Any picture captioned with the word omnomnom (similar to lolcat or failpic)
1. gtg i hav 2 omnomnom

2. Dude, this omnomnom is freakin' hillarious!
by Taco pown3r August 18, 2009
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To eat a person or eat a persons body parts.

Or to show thanks or hello
i omnomnomed my girl friend last night
or
omnomnom anna
or
can i omnomnom your ear?
by ramenlover1994 December 27, 2008
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Omnomnom is the sound that zombies make when eating people.
Bob: Omnomnom!

Nube: AH! IT'S A ZOMBIE. IT'S EATING ME!
by XxXDieXRomanticXxX April 01, 2010
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The act of eating food so that it spontaneously disappears off of the plate in a timely fashion.
As soon as I'm done omnomnoming
by Abbey Thorby January 27, 2011
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