blue turtle shell 

During sex, when a person is about finish first, their partner punches them in the face or back of the head, thus allowing the trailing person to finish first.

He was about to cum, so I blue turtle shelled him in the face.

blue turtle shell by Hockeycapn July 29, 2017

Puberty in a Nut Shell

You might want to avoid shaving your pubic hair because when it grows back in, the skin may be irritated and itchy. Also, guys may think twice about shaving their chests, and girls should avoid shaving their faces because the stubble that grows back will look prickly and thicker, forcing you to shave over and over.

"Whats Puberty in a Nut Shell?"
"Puberty is a bitch dude."
"Ya my pubes are long as hell"

Puberty in a Nut Shell by Butthole Betty January 11, 2019

derek shell 

The definition of a total dick, he hates everybody and makes other people do things for him. he's a total douche and makes other people mad.

Guy- kys
Other guy- You're being a Derek Shell.

derek shell by DerekShellHater May 20, 2018

What the shell 

When something takes you by suprise!

Tom: Tony shagged Barbie yesterday!!!
Frankie: What the Shell!!!!
Coulson: Noooo way!!!

What the shell by Shells are us March 24, 2010

Giving a Stuffed Shell

When you stick one or many fingers into your own anus and take the fecal matter from your rectum. With your finger covered in poop, you stick it/them in her vagina while simultaneously fingering her. Repeat the process until her vagina is either full or until she has climaxed.

i stuck my own finger in my ass, now im gonna take my poopfinger and shove it in her pussy. thats called giving a stuffed shell.

Giving a Stuffed Shell by edstl228 July 25, 2010

Blue Shell

When a guy and a girl are having sex and the girl thinks the guy is going to finish too early, she smacks him hard on the balls so that she can finish first.

Sam: I was so close to finishing last night with Diane but then she totally blue shelled me and now I'm walking funny.

Blue Shell by Pow! Right in the kisser! December 15, 2010

Ma-Shell 

Ma-Shell is an urban carnie. Which is someone who has small hands and smells like cabbage but is found in an urban environment. ie: At a dance space or a city type space.

"hey you're cool and urban but you smell like a quick sale cabbage what a ma-shell"

Ma-Shell by Sneaky February 7, 2005