When you find out your girlfriend is pregnant and you push her down a staircase at a random time in hopes of giving her a free abortion.
Guy 1 : I just learned my girlfriend is pregnant! What do I do? I can't afford to have a kid!

Guy 2 : Sounds like it's time to give her a staircase surprise!
by Baby Box January 27, 2011
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a dance making light or satire of the "lean back". it involves exaggerated body movements, lifting legs high and leaning far back in an animated and comical manner, as though climbing giant stairs.
by technics_speak October 22, 2005
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The act of 69ing while slip-n-sliding down a staircase into a pool of green jello
I think I broke my arm riding the green staircase with katrina
by Cabur December 4, 2015
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A family that consists of many steps. Step parents, step children, etc.
My family has so many remarriages, we're a family staircase.
by Cheyamonster February 13, 2017
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It's when you fuck in a staircase. What did you expect?
Of course, staircase fuck could also refer to:

Taking out an erect penis (or similar sexual device) and attempting to stick it into a staircase.

To exclaim the word "Fuck" while in a staircase.

To use the word "Fuck" in quick succession, with each repetition being spoken at a higher pitch.

To declare to oneself that from now on, you will only fuck another woman if she is hotter than the last one you fucked.

"I caught my apartment-neighbor staircase fucking when I decided to take the stairs instead of taking the elevator."

"Fuck."

"Fuck fuck fuck."

"Duuuuuude look at dat booty! You could see that thang all the way from China. Nigga you gotta tap dat ass!"
"Naw man, I've done betta. I've promised myself to only staircase fuck from now on."
by Phillip Reacher March 25, 2014
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A staircase baby is a descriptive term (used among black women) to define a child that was conceived while the parents engaged in sex/intercourse on a staircase. The term is most often associated with teenage Blacks who live in "projects". The Staircase baby term is not exclusive to project stairways. The term applies to any child that is conceived on a staircase (anywhere, anytime).
She kept sneaking out of the apartment to meet him, now she got a staircase baby.
by Jsmx1 September 26, 2017
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A sex position in which the women sits on the mans pogo stick and rides him down the stairs
Babe, we should Staircase Pogo one time
by Chubb is the Goat August 27, 2022
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