A brown stiffy is when a man preforms anal sex on a woman (or sir) and she poops whilst he is inside. This can be intentional or by accident.
by Ching_Chang_Chong December 17, 2015
by Crazy dum December 14, 2021
Getting an erection due to having to take a piss.
Similar to Morning Wood, except it happens while you're awake.
Similar to Morning Wood, except it happens while you're awake.
Ashley: Is that a gun in your pocket, or are you just happy to see me?
Cam: Neither; it's a piss stiffy.
Cam: Neither; it's a piss stiffy.
by Camshot4 June 08, 2016
Getting an erection due to having to take a piss.
Similar to Morning Wood, except it happens while you're awake.
Similar to Morning Wood, except it happens while you're awake.
Ashley: Is that a gun in your pocket, or are you just happy to see me?
Cam: Neither; it's a piss stiffy.
Cam: Neither; it's a piss stiffy.
by Camshot4 June 08, 2016
i was sitting with a girl that i had no attraction to. but she took off her shirt, and bam. stiffy danger
by samiluna312 October 21, 2013
Those moments when you’re up late and get a grade-a raging cock penis boner hard enough to penetrate the earth’s crust
Girl on FaceTime: hey lol let’s stay up all night
Guy on FaceTime: I CANT THE LATE NIGHT STIFFY HAS STRUCK AGAIN
Guy on FaceTime: I CANT THE LATE NIGHT STIFFY HAS STRUCK AGAIN
by _The_Fool_ May 16, 2023
|The act of putting in an up right position under the elastic waist band of shorts/sweatpants to hide an erection.
The boy had gotten aroused when seeing his stepmothers mid drift so he a had to stiffy-stuff his erection in his shorts.
by poopsackle November 06, 2015