Top Definition
A factitious disease created through the kissing of a hamster. And onto a human being again. It's awfully contagious and won't kill you. But, watch out - you can always tell when someone has it if they have a sore throat! It all began in 2009, right before the Swine Flu. What copy cats.
Joanna: Dude, Jess. Did you see Danny the other day?

Jess: Hahah! Yes, he has ONOM. What a loser.

Joanna: I know! How'd he get it?
Jess: From his hamster.

Joanna: Woah.
by Jesskiddin August 10, 2009

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