A term used in reply to someone who is making a statement that you either disagree with or say just for the hell of not agreeing with them.

Most often used when someone does not want to admit something.

*The only way something can be proven is with a pencil sketch showing that the statement is in fact valid.
Dave: Dude, Wendy is so hot!
Thomas: Prove it.
Dave: I have a picture, look!
Thomas: NO! That isn't a pencil sketch.

Chris: I made some awesome cupcakes yesterday.
Andy: Prove it.
*Chris draws a picture of himself making cupcakes entitled, Yesterday*
Chris: There! I proved it!
Andy: True dat!
by Dr. Octagonapus October 26, 2008
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used by nerds (especially in TED talks) in place of "be", particularly when it precedes an adjective, to make themselves sound smarter.
These illustrations might be helpful in visualizing the subatomic particles. = Meh...
These illustrations might prove helpful in visualizing the subatomic particles. = This guy knows exactly what he's talking about.
by trexred March 27, 2016
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a phrase that can be used when at a loss of words, to ensure an adequate come back. (Gives time for the user to get back on the "ball")
(Larry and Jerry are engaged in a vocal disagreement)

Larry: .... yeah? Well I f***** your mom
Jerry: PROVE IT!

-or-

Whoral: I may be a whore, but you're fat.
Chubbalina: PROVE IT!
by What? I'mdancing! May 1, 2009
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Her: “I have 3 nipples
You: “Both of you prove it
Her friend: “But I don’t have 3 nipples.”
You: “Prove it.”
by TerribleAsian December 3, 2018
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-A term used to annoy or confuse someone for shits and giggles.
-A way to end a conversation that you don't want to continue; used to stop a conversation from starting.
--Can be used to tease someone for stating the obvious.
-Stating that you are choosing to ignore someone.
-Can be used after someone else says anything; does not have to make any sense.
Example 1:
Dave: Hey Jon, do you know where my toothpaste is?
Jon: Prove it.
Dave: ....What?

Example 2:
Jon: Hello dave, whats up?
Dave: Hey Jon, not much, how are ya?
Jon: Alright.
Dave: Yea? Well I was just about to go to the store to pick up some food for my cat mittens and...
Jon: Prove it.
Dave: .....

Example 3:
Dave: Hey Jon, I'm going on a walk.
Jon: Prove it.
Dave: ...Damnit!
by goatstradamus June 17, 2006
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to sleep with a hot girl you have found on facebook.
Lloyd: "Hey Pedro can you help me prove this formula"
*Pedro walks over, sees some hot chick on my computer screen, points at her and says: "nah maang, but I wanna pruuve daat"
by Verachmelaad July 17, 2009
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Guy 1: you heard this fan theory?
Guy 2: it’s not a fan theory it was proved
by iTz_Miners August 4, 2018
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