Mispronunciation of "dub"--A "double dime" --two $10.00 quantities--of illicit drugs (usually crack). Refers also to one (single) $20.00 quantity of drugs.
Dude: Yo, set me up a dove.
Mon: You got the whole thing?
Dude: Yeah I got the twenty.
Ajective decsribing behavior. Usually implies that the behavior was impulsive, done without considering the consequences.
After Sarah insulted Jimmy he went off half-cocked about her haircut.
