The phrase om nom nom is a long-running piece of internet onomatopoeia for noisy, enthusiastic eating, written out in comments, captions, and meme edits long before it became a standalone audio clip. Because it needs no translation or explanation, it travelled easily across short-form video, reaction edits, and soundboards, where a two-second munching gag can punctuate a joke without dialogue. It remains popular because it is instantly readable, family-friendly, and flexible, working equally well for pets, cartoon characters, food reviews, and over-the-top eating challenges.