1 definition by Immortallight1974

noun
\'fir 'bo-nər\

An erection caused by a sexy, usually menopausal, MILF/GILF that gives the recipient varied feelings of confusion, intoxication, intrigue, elation, disgust, excitement, sadness, delight, and fear.
//getting a fear boner from your Step-Dad's drunk aunt when her tiddie flops out at the family BBQ

When an 18 - 25-year-old male inexplicably becomes sexually aroused because a funny, hot 45-year-old or older MILG/GILF looks at him; generally leaving him with an uncontrollable urge to masturbate while ugly-crying.
//rushing off to beat-out a fear boner your buddy's mom gave you when she smiled at you
Why is Ronnie spending so much time in the bathroom, Dude?
My Step-Mom gives him raging fear boners.

I get savage fear boners when Stiflers Mom smiles like that!
by Immortallight1974 October 29, 2023
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