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

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Being fucking crazy
Are you fucking on fire?!!
by Eja September 06, 2013

The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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to wait for some thing worridly or afraid from some thing is very angry about some thing happen to him from his friend and will bunish him
i waited for my result on fire ,or, walied was on fire for knowing breaking of his watch,or, beacause of the bad weather my mother was on fire
by ALYAA March 23, 2007

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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adj. Having a horrible smell.
Tiffanni: Her breath be on fire!
Mary Kate: The bitch must have halitosis or something.
by rexctang October 13, 2006

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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(male) Incredibly and unbelievably homosexual
oh my god, did you see that guy? he was on fire!
by tardo October 05, 2003

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt