Top definition
A feeling of impending lunch
I have this omnominous feeling...
by Wulfson August 10, 2009
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Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

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2
When something looks really really delicious, but gives you a vague sense of foreboding.
Wow Tom, that pound of McDonald's fries covered in cheese and gravy looks super omnominous!
by WOODEN April 04, 2014
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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