Top Definition
the opposite of NOM NOM NOM; upchucking; punking; blowing chunks; throwing up
Dude 1: Dude are you ok?
Dude 2: MON MON MON
by spagetti_cat_lover99659780 January 17, 2009
1 more definition
Throwing up. Opposite of nom nom nom.
Ugh this is disgusting... i think im gunna.... MON MON MON!!!
by waterdude125 July 06, 2010

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