look up any word, like blumpkin:
 
1.
Injecting into your arm with a needle heroin that has been disolved in water without boiling it.

From:

Cold Shot = Heroin disolved in water without boiling

Hoop = Slang for heroin
Lyrics from Dynamite Hack's song Boys In The Hood:

"Cruisin' down the street in my 6-fo'
Jockin' the bitches, slappin' the hoe's
I went to the park to get the scoop
Knuckle-heads out there cold shootin' some hoop
A car pulls up, who can it be?
The fresh El Camino rollin Kilo G
He rolls down the window and he starts to say
It's all about makin' that G.T.A."
by Gary W. February 21, 2004
 
2.
playing basketball
We were just cold shooting some hoop when that nigga flipped out over a foul or some shit. So we shot him.
by Nick D February 25, 2003