Stiffen 

To stiffen someone means to give someone a right good beating so they are stiff in the morning. If you stiffen someone they won't know what's hit them. Said to have originated in Glasgow, Scotland.

Example 1:
Jock: Here mate did you see stiffen Bobby last night?
Div: Oh aye, he will be stoatin about this morning!
Example 2:
Jock: Shut it or all stiffen you!
Davy: Awright the come ahead ya fud!

Stiffen by Jock McTavish March 22, 2013

stiffen your neck 

become stubborn

stiffen your neck by Mr. Terrence L. Trezvant October 13, 2003

stiffen up 

A phrase used by some fat fuck with a cast on his hand

He told his friend to stiffen up after he referred to him as "fatass" for getting three plates

stiffen up by Bagmoney September 6, 2021

stiffen zeecock 

boner; erection you get after watching porn for 9 hours

I had a stiffen zeecock from teh buttsekz!1!11!

stiffen zeecock by Boxxcarr September 8, 2003

get stiffen 

it's when your dick stiffens so that you can do something useful with it...

I didn't get stiffen so she had left the room just before I took my steel vibrator from under the bed.

get stiffen by atzuska November 12, 2004

jahova's stiffness 

An unwanted erection that surprises you at work, school, disney land, or any other public place. Not to be confused with a jahova's witness. (the annoying bastards that also surprise you and try to give you little bibles with pictures in them to make them more fun to look at, and not read)

Dude, i got jahova's stiffness at disney world when i got on the Peter Pan Ride.

jahova's stiffness by joe joe the circus clown November 8, 2009

Stifferino 

A fictional lozenge imagined by Albertus of the Desert, marketed in his mind to aging men such as himself, to provide the hopeful illusion of a potential hard-on.

My dad invented Stifferino lozenges and I still have the prototype.

Stifferino by Dr Bunnygirl March 31, 2019