Top Definition
1 an erection of the penis, Syn. boner, hard-on.
2 A strong drink, a double, esp. a double-bourbon-and-coke.
3 (South Africa) A plastic-cased 3.5-inch floppy disk, as opposed to the more flexable 5.25-inch floppy disk.
1 Oh man, I got a stiffy.
2 Gimme a stiffy and two pints.
3 Have you got a stiffy? I need one to save this file.
by Spootonium October 10, 2004
A male sexual stimula formula
I have a Stiffy whenever I see that girl.
by Sir Stiffy April 21, 2010
a long erected penis,boner
hello boner
by john July 24, 2003
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?
by Derek Blount April 15, 2008
A boner.
man i was talking to my mom earlier and all of a sudden i got this giant stiffy.
by a jiz monster April 17, 2009
A stiffy is a snowboarding trick
or a word for children for an erecton.
"i did a 180 stiffy yesterday"
"have you ever had a stiffy?"
by Triggy January 23, 2005
something Lee gets when he sees glen
lee cracks a fat when he sees glen
by bobby March 15, 2005
what i get when i see sam nowell
by boner duede September 07, 2003

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