by Nick Sangia March 26, 2003
1. A Crank Case is your bladder. This term is usually used when someone has to go to the bathroom and doesn't want to be completly rude or just to be funny.
2. A Crank Case is also a part in a car.
2. A Crank Case is also a part in a car.
"Excuse me, I have to go defule my Crank Case."
by alabama February 18, 2006