kidney cracker 

Another word for penis!

Bob hit me with his kidney cracker

kidney cracker by darryl February 5, 2003

Kidney Cracker 

while your fucking a girl in the ass, doggie style, and you take a piss. after you pull out you punch her in the kidneys.

I gave that bitch a mean kidney cracker.

Kidney Cracker by ironicstatement August 10, 2009