stiffy 

An erect penis,usally gotten through sexual arousal.

We all know Paris Hilton sucked her boyfriend Rick Solomon's stiffy,weird lighting there too.

stiffy by Dude_75 April 17, 2006

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

Stiffy by My nickname is Stiffy September 3, 2012

Stiffy 

Often Used In The Bronx , Stiffy means A Gun Or a Gun that cannot be traced

Blicky got the Stiffy

Aye man you selling a Stiffy

Everyone on this block got a stiffy

Stiffy by KingPinNumba3 April 19, 2018

stiffy 

When you get a sudden rush of blood to your old man when you see a picture of a woman ass, tits, and fanny

stiffy by Jeffery Sylivester January 31, 2003

stiffy 

when a guy get a hard cock

Look, he's got a stiffy!

stiffy by Anonymous January 31, 2003

stiffy 

A name given to a 1.44MB data disc to differentiate it from a 360MB "Floppy" data disc.

Not used outside South Africa to my knowledge.

To a secretary: Can you give me a stiffy?

stiffy by Derek Blount April 15, 2008

stiffy 

uncontrollable erection whilst on a bus

I couldn't disembark at the Heathway because of my ginormous stiffy

stiffy by theWestHamfan October 19, 2003