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.

by 5'1"Racer September 6, 2005

Incompatible shell and loader

When a man's penis is too large to fit into the vagina of a woman during intercourse at first.
If the wrong shell type is presented to the gunner, his cannon cannot fire.

Damn, it looks like we got an incompatible shell and loader.

by Shell and Loader May 15, 2016