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The slang name for the Ohio Northern University Marching Band.
Jack: Are you doing ONUMB next year?

John: Yes, I love marching band!
ONUMB by tbsonumb December 17, 2008
Related Words

ogrumblebone 

A man handcrafted from the gods and is one of his kind. A race that only he is and is a divine being. With the added benefit of wielding a 16 inch fat whopling cock. People shan't try him or they will meet the abyss of smeats.
OGRumbleBone was simply hand crafted by the gods themselves. Beings who dare trifle his divinity shall be forever shamed.
ogrumblebone by urhdhbdb May 15, 2020

OgKumaStains 

The things that you find on Coopers undies. They have a tendency to appear when you do a relay sloppy fart, or don't wipe your ass in the correct manner.
Person 1: Look Cooper has OgKumaStains.
Person 2: Bahahaha
OgKumaStains by The Mega Bruh October 29, 2019
Ognom is another word for calling someone a retard without hurting their feelings.
You big ognom
ognom by Fartsnot June 1, 2016

OGNIMALF 

Something you write in all caps to your friend called kova.
kova: I love you Di_Rect
me (an intellectual): OGNIMALF
OGNIMALF by Di_Rect August 11, 2018