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verb: to convert powdered ("flake") cocaine into rock ("crack") cocaine by combining 2 parts anhydrous cocaine with 3 parts sodium bicarbonate (NaHCO3 or "baking soda").

The resulting substance is a smokable, fat soluble form of cocaine.
Example:
Dee-Boy a straight up baller. He cop fat kis from the combos and step on 'em hard. Then he rock up the yayo and slang it to da heads in the hood.

Translation:
Dee-Boy is a successful pharmaceuticals entrepreneuer. He acquires large quantities of anhydrous cocaine from a major international supplier and processes it into a more conveniently self-administerable form before distributing it to low-income local end users, thus turning a tidy profit.
rock up by HttpDee October 17, 2007
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Rock Climbing

One of only three sports ever invented, the other two being ultimate disc and rock climbing.
Rock Climbing by Wallrat February 28, 2005
Related Words

Rock Hierarchy 

The Rock Hierarchy consists of several bands that are the Rulers of Rock. The Gods of rock are Led Zeppelin. The Lords of Rock are AC/DC. There are two main Kings of Rock. These are David Bowie and Jimi Hendrix. The Dukes of Rock are The Who. Finally, there are the Kights of Rock. These are Alice Cooper, Black Sabbath, and The Doors
"Hey, have you heard about the Rock Hierarchy?"
"Is that like Avril Lavigne and Simple Plan? They kick ass. They taught me how to be punk."
(Members of the Rock Hierarchy would now either come back from the dead OR swoop down on this person and douse them in acid.)
Rock Hierarchy by Frances May 14, 2004

Rock Pools 

Can be used for anything that is basically boring or useless. Derived from the only tourist attraction in Townsville Queensland Australia.
Damn that random spam posted by that girl on the forums is Rock Pools
Rock Pools by MarkF July 3, 2005

rock rental 

n. an automobile loaned in exchange for crack cocaine.

This term has been especially common in New Orleans, Louisiana.

A synonym is "crack ride" or rent-a-rock.
Citations:

1992 Joe Darby, Greg Thomas Times-Picayune (New Orleans, La.) (Aug. 11) “West Bank School Football Star Pleads Guilty To Drug Charge” p. A1: The dropped public records charge stemmed from what Sheriff’s Office spokesman Capt. John Fortunato called a “rock rental,” where someone loans an automobile in exchange for a rock of cocaine.

1996 Michael Perlstein Times-Picayune (New Orleans, La.) (May 30) “Probation A Safety Net Rife With Holes” p. A1: He admitted he was driving a “rock rental”—a car loaned to him in exchange for crack cocaine—when he rammed into another car.

1997 Louis Edwards N: A Novel (May) p. 52 @ (May, 1998): “A rock rental.…I gave somebody a rock and they let me borrow they car. Just for a day or so. Plus they owed me for another time.” “So you deal crack.”

1998 WGNO-TV @ New Orleans, La. (Video Monitoring Services of America) (Nov. 11) “Television”: C. Hearn Taylor, Juvenile Judge, said there are rock rentals where you can get a gun for a rock.

2005 TCPalm.com (Stuart, Florida) (Sept. 28) “Police recover car allegedly used in drive-by shooting” (in Fort Pierce): Police also arrested Richard LaWayne Simmons, 18, of the 1200 block of McCray Court in Fort Pierce for allegedly stealing the car through a practice known as a “rock rental.” According to a police report, Simmons arranged to “borrow” the dark blue 1998 Acura for an hour Thursday night in exchange for crack-cocaine.
rock rental by urban1dict January 10, 2010

rock the boat

a female pleasuring herself by bumping her clitoris back and forth with some wavy roughness, no penetration just going waves on the rock in the hood
Damn I'm so excited to see my boo, I think I'm gonna have to go ahead and rock the boat til he gets here to satisfy the naughty thoughts I'm having.

If I don't rock the boat and masturbate right now I'm going to loose my mind, I'm horny AF!

My favorite way to cure my longing desire for my honey is to rock the boat really fast until the waves of my fingers in my hood cause the man inside to pop off...whats pop in yo?!`
rock the boat by Kandi Queen November 11, 2018

Rock Ridge High School 

History and English teachers are dope!! Math and science teachers can choke on a dick. Students are either minorities just trying to graduate and ignorant yt people.
Ohh you went to Rock Ridge High School...I'm so sorry.