AP shell

Short for Armor Piercing shell, used in tanks or artillery.

The enemies have AP Shells!

shell game

a competition to see who can murder each others crew first. made popular by the Dresden Dolls music video with Panic! at the Disco for the Dresden Dolls song "Backstabber"

"Its a fucking shell game now"

leader shell

In the mario kart games, the blue spiny shell that always hits the leader of the race.

I'm in the lead. Oh crap, here comes a leader shell.

Shell Shock

A mental Disorder caused by active warfare

World War 2

Shell shocker

kinda like the shocker, but instead of 2 in the pink one in the stink its one in the pink and 2 in the stink

she said she didnt want the shocker she wanted the shell shocker cuz she likes it in the BUTT

Turtle Shell

When you sit down and your balls are showing through your pants.

Guy 1: Dude! Did you see John's turtle shell in class today?
Guy 2: Yeah! It was so distracting I hardly got work done!

conch shell

A great ass. You put your ear to it and you can hear the ocean.

KJ's ass is like a conch shell, put your ear to it and you can hear the ocean