gauge

Any type of shotgun.

shortened from 20Gauge, 12gauge, etc.

"Yo Clarence, you grab the gauge, I got my Zig on me, lets take those punkass motherfuckers!"

cocksmith

one who is an expert at the handling of his cock and administering it's services to the female gender.

Gudani is a master cocksmith

Hit up

Grafitti writing.

tagging.

Yo, we headin' out tonight to hit up the hood.