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.
When something is both delicious (om nom) and spectacular.
This word can be used in a broad number of situations (as shown in a couple of examples found below)
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.
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!"