Roller coaster 

to have sex with a girl from behind while her head facing down towards the bottom of the stairs, you then proceed to punch her in the head and ride her all the way down to the bottom of said stairs.

I rode her all the way to the bottom of the roller coaster!

There once was a guy from Bel-air
who was doing his girl on the stairs
the banister broke
so he quickened his stroke
and finished her off in mid-air!

Roller coaster by diederbt March 6, 2008

butt coaster 

A toilet seat used for sleding.

Jimmy, grab your awesome butt coaster. its snowing!

butt coaster by kyle bingham October 8, 2008

carman coaster 

freshman at Columbia University who, on many weekends, passes out in and rides the elevator up and down as it "coasts" through the floors of carman hall.

"hey man, didja see that girl passed out in her own vomit?"

"ya, a total carman coaster."

carman coaster by carman8 November 4, 2009

roller coaster hairline 

Some one with a curved or obscure hairline, it is used as an insult.

Amin's hair goes like a roller coaster.

"Samers hair is so crooked, ". "That boy got a roller coaster hairline!"

roller coaster hairline by WestSideKilla December 9, 2016

41 Union roller coaster 

Roller coaster enthusiast move whereby your hands are raised up in the air (like you just don't care) as the 41 route bus rolls over san francisco's russian hill and into cow hollow.

Greg: "wanna go catch a 41 Union roller coaster?"

Dave: "SURE"

41 Union roller coaster by Margin Monkey #1 April 7, 2009

beer coaster 

beer coaster - is the discription of a cd, dvd or blue ray which holds no real value and will never in the future.

i went out and bought that joel turner cd and it's a real "beer coaster"
every chance i get i give him a spin under my beer.

beer coaster by bryan ham June 13, 2009

Fuzzy Coaster 

Hair that starts from the back of the head and finishes at the chin.

Paco the Puerto Rican has one hell of a Fuzzy Coaster.

Fuzzy Coaster by Aaron,Dave,Maz December 3, 2003