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4.
a state of being when something or someone is engulfed with flames
Guy #1: Hey man, that guy is on fire
Guy #2: Holy crap! should we get a hose or something?
Guy #1: Naw, just tell him to stop, drop, and roll
by Sean on Hartford May 05, 2006
 
1.
A term that people use when someone is doing great and they are unable to be stopped.
Man, that dude is on fire
by lunar shadows September 16, 2004
 
2.
A state of mind in which people believe that they are unstoppable and can do anything they want--and they do.
Allen Iverson was on fire, he was making every single shot he took.
by kane April 27, 2003
 
3.
Unstopable or the shit!
that new lloyd banks shit is on fire
by Josh April 30, 2004
 
5.
a female who is extremely attractive; beyond hot.
for emphasis, pronounced : "on fi-yeeaarr!"
damn! Joes girlfriend is on fire!!! i wish i could get me some of that!
by Anonymous August 28, 2003
 
6.
The condition of a bar which is conducive to acquiring a proper blackout through ripping numerous shots of cheap alcohol.
Dude 1: Hey man let's go to O'hara's and get fucking blacked out. I heard it's on fire.
Dude 2: I'm down, O'hara's is always on fire.
Dude 1: On fire.
by uchibroto December 23, 2012
 
7.
Being fucking crazy
Are you fucking on fire?!!
by Eja September 06, 2013