2 definitions by mweb

Top Definition
Past tense of "it's on. "

Usually said to mark the beginning of a competition or skirmish of some sort, possibly of a spontaneous or unexpected nature.
The two breakdancers briefly sized one another up, but then the beat started, and it was on.
#shit was going down #it's on #donkey kong #duel #competition
by Mweb February 26, 2015
Once a girl ass has reached size 10 or higher.
Do you have that in FAT for my double digit super sized ass?
#dd #fat and fat #super size #fup #gills
by mweb May 24, 2006
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