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a person that has a slow working brain and usually dont get things after 1hr-7days
do you have a stiffy????
stiffy by Anonymous October 14, 2003
Ow you gave me a stiffy
Stiffy by DeathOi March 26, 2021
An erection. A dick getting hard due to sexual excitement. Hot girls tend to make a guy’s dick all stiffy.
Me: (Watching a Marilyn Monroe documentary film)

My mother: Are you getting all stiffy?
Me: LOL, shut up.
A stiffy refers to a new mask
god-dammit dude this mask you gave me is a stiffy.
stiffy by Bofa.d August 1, 2021
Me: Im so fucking stiffy holy fucking shit
Friend: say less
stiffy by uvuboy446 August 20, 2021