“Om nom nom” is widely used online as a playful text and sound representation of happy eating or exaggerated munching. It spread through memes, reaction videos, and short-form edits where creators needed a simple audio cue for chewing, snacking, or fake devouring. The phrase became especially recognizable in internet culture as a cartoon-style way to express hunger or food obsession. On soundboards and in meme edits, it stays popular because the joke is immediate, universal, and easy to sync with visual bites or with a munch eating / biting gag.