the sound one makes when eating and wants to make everyone around them annoyed and desires to be obnoxious.
Mom: bob! eat your peas!
Bob: fine (eats a forkfull of peas)
Bob: om nom om nom
Mom: (gives bob the evil eye) bob!
Mom: Bob!
Bob: om nom om nom
Mom: one!
Bob: om nom om nom
Mom: two!
Bob: om nom om nom
Mom: three!!!!
Bob: om nom o-
(mom drags bob out by the ear and throws him in the trash)
(two seconds later the garbage truck goes by and takes bob)
the sound one makes while chewing off his or her own arm. tends to happen more often while listening to silly drag queens sing a song!
On Sunday night I Om nom Om Nom nom my arm to easy the pain which was caused by the cat calls they said was a love song duet.... :)