A condition where a person has to fart so bad they become erect; A condition where a person has such a satisfactory fart they become erect.
"Dude, I just shit my pants. I think I have a fart boner."

"Oh man, I'm going to shit my pants. I'm getting a fart boner."

by Jake Adams October 22, 2007
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During a moment of extreme sexual daydreaming or during a masturbation session, the raging boner manually overrides all bodily functions. Resulting in a non-consented fart.
"I can't make it 5 minutes into that porno without a boner fart, the acting is that good."
by Ekim C Live August 08, 2013
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When a man sees something stimulating, and ejaculates a small amount (or large amount) from the visual stimulation alone.
While watching TV last night, your hot sister showed up on the latest girls going wild commercial and caused an instant boner fart.
by ronchx October 24, 2009
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An incident that occurs which causes feelings of disappointment.
That test totally farted on my boner.
I told her not to fart on my boner, but she told me the bad news anyway.
by stupidass January 16, 2006
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