Definitions by Dr Merkin

Cracking it 

Undertaking sex work, working as a prostitute. (1970s Australian slang)

Sarah is cracking it for money to buy drugs.

Cracking it by Dr Merkin January 13, 2009

Register

The plume of blood that appears in a syringe chamber when injecting, suggesting that the venepuncture has been successful (Drug user slang)

Usually I can't find a vein but yesterday I got a register first go!

Register by Dr Merkin January 13, 2009