B.O. Ball

Any clothing item worn and taken off after a full day's use, containing B.O., which is thrown into an easily forgettable place, with the intention of wearing it again, but ending up forgotten and soaking in its own B.O.

Eliza: "Sarah, have you seen my new brown sweater? You wore it last week."

Sarah: "Isn't it in your drawer?"

Eliza: "No. It's not in there. Oh, here it is. You threw it under the bed in a B.O. Ball."

B.O. Ball by Dirty Harry 1 January 10, 2013

Old Man Balls (O.M.B.) 

noun: droopy, wrinkled, testicles that belong to a man 45 years or older. Just the thought of old man balls (more commonly referred to as O.M.B.) is enough to make you shudder with disgust.

Girl 1: "So, how is Paul in bed?"

Girl 2: "Oh man, he was turning me on and all, but then I saw his Old Man Balls (O.M.B.), and I would have needed to do some meth to get on that!"

Old Man Balls (O.M.B.) by O.M.B. February 19, 2009

bo balls 

what you get after a long jog or sitting in the office all day if you're a fatty

Matty's been sweating like a scouser in Dixons and his bo balls smell like flamin hot monster munch

bo balls by BigJarv September 5, 2008