Here's a breakdown of its likely origin:
* Imitation of Sound: The "nom nom" sound is often used to describe the act of eating, particularly when enjoying something delicious. It captures the rhythmic motion of chewing and the pleasant sounds associated with it.
* Childish Origin: "Nom nom" is often used by children and young people to describe the act of eating. It's a playful and endearing expression, likely stemming from their early attempts at mimicking sounds.
* Popularity in Pop Culture: The word "nom nom" gained popularity in the late 20th and early 21st centuries, thanks to its use in cartoons, memes, and online culture. It's become a widely recognized and understood way to express enjoyment of food.
While the exact origin of "nom nom" may be lost to history, its use as an onomatopoeic expression for eating is undeniable.