all-out

not hold anything back, sparing nothing

Both sides went all-out when the game started.

IC

I understand you (used in email and on forums, not pronounced aloud)

IC, it was only a joke.

County Mounty

A highway patrol officer.
(see also; Koopa Troopa)

"You have your Newark Police, and then you have your County Mounties and your Koopa Troopas."

high octane

forceful, powerfull, energetic

They chose to run the high octane race.

lay a fart

(variants: cut, let, rip, or crack may replace lay)

to flatuate

He laid the worst fart I had ever smelled.

tinsel teeth

a person with dental braces

What's the matter tinsel teeth, does the cat have your tounge?

crack someone up

to make someone laugh(see also crack up.)

"Your foolishness just cracks me up."