half a deuce 

One ounce of codeine/promethazine syrup. Literally, the term means one half of two ounces. Make sense?

Guy 1: Hey, man, you got any lean?
Guy 2: How much you want?
Guy 1: Half a deuce.
Guy 2: Yeah, if you got twenty.

half a deuce by "Smelly" Zach March 14, 2006

deuce and a half 

A woman that weighs in the neighborhood of 250 pounds.

She's at least a deuce, probably a deuce and a half.

deuce and a half by Bill August 19, 2004

Deuce and a half 

The standard 2.5 ton truck for the US Army.

Dammit, I am stuck having to drive our deuce and a half back to the shop...

Deuce and a half by VP-bofh January 26, 2004

Deuce and a half 

For firefighters, a 2 1/2 inch hoseline used to fight large fires.

Captain: Probie, pull the deuce and a half and go to side C

Deuce and a half by FFProbie November 5, 2007