Stiffy

A mega-ass erection.

John: Why is your groin area protruding like that?
Bill: Oh, I just got a stiffy.

by SwagMasta42069 April 11, 2018

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Stiffy

A boner or erection

Man, Billy got a huge stiffy.

by MensWear June 11, 2018

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Stiffy

A stiffy is an extended clip on a gun.

My gun has got a stiffy

by Urban gang November 29, 2017

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Stiffy

A slang word for erection or hard-on. As an erection is the 'stiffing' of the penis, a 'stiffy' is an understandable slang word. Normally used by children first discovering sexual things.

Ethan and I were discussing sex and he got a stiffy from thinking about it.

by Athena12 March 26, 2009

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Stiffy

The most awesome nickname ever. This person is probably the coolest person walking on earth.
And most most certain; drop dead gorgeous, since he/she is compared with a boner.

-Oh, have you met stiffy?
-Yes she gave me a stiffy

by My nickname is Stiffy September 03, 2012

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