it's on

what you say when the battle/showdown is about to begin, or when you want to fight someone after school.

It's on, mother trucker!

by fizzle April 11, 2004

it's on

a closure synonym:bye, c u l8ter, etc. (only raw people say this)

I'm bout to go, it's on yall!

by #1ThirstBall February 2, 2005