An eating noise. Usually used with capital letters to emphasize how delicious something is; this word is used in chatrooms more often than not. It serves the same purpose as nom.
by Zehla April 01, 2007
As the male (hippo) approached the female (hippo), he seemed to say, ''nyom nyom nyom''. To which she replied by shaking her hippo hips and spread her legs and they did the hippo hustle
by hippopenguin December 16, 2012