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Stair master 

Getting a blowjob on a stairwell. Often this causes the shakes, especially when done outside your neighbors door. There is a certain covertness to this often when it is said.
Hey, my sexy Russian baby momma want to help me get in shape on the stair master when they pass out?
Stair master by Kiss Kiss & Hero March 30, 2016

Stairmaster 

A legend who is known to have sexual intercourse under flights of stairs at John Marshal High School. He Is now graduated and living the sauce life.
Student: too bad stairmaster isn't here anymore. I looked up to him so much.
Stairmaster by stairmasterisgnarly January 19, 2014

stairmasterbating 

To engage in an intense exercise or fitness regime which causes one to ignore relationships and responsibilities; usually a short-lived affair seen at the beginning of the year and immediately prior to bikini season.
Jessica: "Sorry I didn't call you back. I was on the treadmill. I love the way I feel now that I'm losing weight!"

Martin: "Well, I swear to God, if you don't answer the phone again because you're stairmasterbating I'm going to come over and poke Rocky Road down your throat."

Cleveland Stairmaster 

While walking up a flight of stairs, taking a projectile shit or sharting (fart & shit at the same time) on the person behind you.
Guy 1: Dude you wouldn't believe what my girl did last night!

Guy 2: She didn't fake it?

Guy 1: Nah, I was walking up stairs behind her and smacked her ass and she suprised me with a Cleveland Stairmaster!

Guy 2: Dude....
Cleveland Stairmaster by Skadandy88 December 14, 2010

stairmaster 

To totally own, abuse, or dominate.
He really stairmastered his nuts on that firehydrant.

I'll stairmaster that loser.
stairmaster by chad&friends April 15, 2003

organic stairmaster 

I'm gonna go get some exercise on the organic stairmaster.

I climbed every organic stairmaster in Florida the other day.

The organic stairmaster sure tires out Fluffy.
Word of the Day on October 28, 2010
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026
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