An anal enema using hydrogen peroxide as a form of morning after birth control. Usually administered in common forms of mobile home parks in Oklahoma.
Dude 1: Dude, my sister just got an Oklahoma whitewash.
Dude 2: Really? What were you guys gonna name the kid?
Dude 2: Really? What were you guys gonna name the kid?
by cartmanking68 August 13, 2009