look up any word, like ratchet:
 
1.
verb.

Coming from the historical chant "99 bottles of beer on the wall", used to describe one that has held there "urine" in ones bladder for a long period of time.

One that has to urinate (very badly).
"I gotta piss so bad, I'll be fillin' 99!"

"Stop here. I gotta fill 99."
by Miss Star August 03, 2007

Words related to fill 99

beer lake pee piss shit toilet urge urin urinate