Shellformer 

A term within the Transformers fan community to refer to figures in which the entire alternate (non-robot) mode is formed from pieces hanging off of the robot mode (kibble). Notable cases include Beast Wars Neo "Big Convoy", whose entire wolly mammoth mode, except for some parts on the robot mode's legs, can be popped off and assembled into a near-complete mammoth mode without any major dissasembly; and RID Side Burn, in whom hardly any robot parts form parts of the car.

"Dude, as cool as some of the Beast Wars Neo toys were, they were all major shellformers

Shellformer by ShiningBlitz May 23, 2009

Stuffed Shells 

the opposite of a sausage fest, refering to a bunch of girls (vaginas)

That was a stuffed shells party.

Stuffed Shells by KristenWhalley November 9, 2005

sellotrap 

The game of Sellotrap (tm) is where stationery and boredom collide.
When a co-worker leaves their desk unattended, it is your job to set up a sticky spider's web of sellotape to ensnare your colleague upon their return. Ideally the web should be almost invisible to the naked eye, although a common way to make the sellotrap work is via distraction. The veteran sellotrap player may use tactics such as alluring screensavers or desktop backgrounds to divert the trapee's attention. WARNING - it is best to keep sellotraps above knee level (especially tripwire sellotraps) in order to avoid injury, death or unwanted lawsuits due to trippage.

Mr Butler: I say, there appears to be something stuck to the top of my balding pate!
Mr McDowall: What splendid fun, my sellotrap hijinks have worked a treat!
Ms Hobbs: You chaps had better get back to work lest your backsides meet my beating stick at speed.

sellotrap by AlvinSimonTheodore January 6, 2008

schellinger 

A feisty man or woman who is hot tempered and sarcastic, yet very protective and nurturing. Ladies/gents on the street, but freaks in the bed. Highly inappropriate and love to imbibe.

She is a drunk, sarcastic mess that I heard is good in bed. But don't mess with her family because I heard she's a schellinger.

schellinger by dnommah December 4, 2012

mainstream sellout 

The sixth official studio album by machine gun Kelly

Mainstream sellout fuckin rocks

mainstream sellout by Jaydubhs March 7, 2022

shellnut

the word "nutshell" but the words swapped for comedic use.

"this is my story in a shellnut"
"you mean nutshell?"
"shut up tina"

shellnut by ohjosh03 November 2, 2018

Selling 

When playing the game “NBA 2k19” and shooting contested shots and yelling GREEN and missing your shots.

You’re selling dude.
You air balled

Selling by Sell god March 9, 2019