Stir the Norwegian's porridge 

To insert unnecessary chaos into a situation. To escalate matters. To absolutely wreck someone's entire world possibly forever.

Fred: Just don't mention her ex-boyfriend when you talk to her. You'll just stir the Norwegian's porridge.

Jake: Got it. The last thing I want to do is to make a scene.

Stir the Norwegian's porridge by benlulz January 23, 2021

stair-banging 

An act described as a rough humping on a flight of stairs.

In "A History of Violence" Viggo Mortensen got some hot steamy stair-banging.

stair-banging by BRizzau May 19, 2006

Stair kids

Kids that are very weird and immature. They have a strange attraction to sets of stairs. They hang out there all the time.

Person 1: Bro who are those kids hanging out at the stairs?

Person 2: Stair kids bro

Person 1: WTF is that one doing?

Person 2: Looks like he's hanging upside down from the stair railing.

Person 1: Let's leave. These stair kids are creeping me out.

Stair kids by D-R3K February 7, 2009

Dane Stair 

When a woman performs oral sex on a man in a stairwell, usually in a school.

Man 1: Dude where were you last hour?
Man 2: I got a Dane Stair from Sarah!
Man 1: Nice!
*high fives*

Dane Stair by Karnivore0915 March 15, 2010

stair diving 

A game created by the band guns n roses. it involves getting really drunk then taking turns throwing ones self down a stair case.
this game is played by true guns n roses fans
Warning: the morning after is not pleasant

Rocker: lets get wasted and do a bit of stair diving

stair diving by fencingdude September 12, 2006

Stair Clap 

The clapping of a male's scrotum against his inner thigh when he runs down or maybe even up stairs.

When Tommy ran down stairs excitedly, he Stair Clapped and got sick from the impact.

Stair Clap by schaeferqwaefer November 22, 2009

Stare Stair Game

You eyeball people walking towards stairs hoping to engage them in prolonged eye contact, so to make them forget about the stairs they are about to reach. You win the game when they keep eyeballing you and fall up or down the stairs.

Where have you guys been, I've been waiting here for twenty minutes? Sorry dude, what ya been doin. Just playing the stare stair game. Cool how many did ya get? Two fat chicks and a business man.

Stare Stair Game by Wimberley August 29, 2010