The most catching word to say when eating or wanting to eat something. It can also be used as an ice breaker with a new group of people. It can also be used to agree with an idea.
Example 1:
Person 1: Dude I am soo hungry.
Person 2: Lets get some taco bell.
Person 1: Nom Nom Nom!
Often used in situations to describe the act of eating. Placed with many kitten pictures, as well as anything else that could be seen as eating something