When an otherwise enjoyable event is ruined by an unforseen negative event.
So I'm finger blasting this chick and she farts. Unboner.
by MacApedia November 11, 2010
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Said by WergBurg aka MrWerg aka djy1991 during his first stream on ustream after switching from livestream. His boner unbonered to help him pull out his new computer from its case.
by Shouhei July 24, 2010
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An unboner is a very tight vagina with balls hanging from it that forms where your penis normally is.
Person 1: That image gave me an unboner

Person 2: what the hell is that

Person 1: An unboner is a very tight vagina with balls hanging from it that forms where your penis normally is.
by Unboner haver December 1, 2021
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When a girl and/or mature women couldn't possibly give you a boner. Usually mentioned amongst men who are discussing wether they would engage in sexual relations with a woman or not.
Person 1: Dude, what do you think of Mrs. Moreland? I bet she's a cougar.

Person 2: Dunno bro, I don't think I could handle that bitch. She's unbonable for me
by FracklestickMan July 16, 2010
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