The Act/Process of washing one's self in a gas station/truck stop's bathroom sink with paper towels and hand soap. The process usually only covers the face, neck, underarms, and chest.
No Letiscia, I stink because an "Oklahoma car wash" is all I can afford right now.
by Crazy Daniel "Webster" September 20, 2006
The drunken act of peeing from an overpass on the cars going by below. The best place to do this is where a country road goes over a highway and a quick getaway can be made. You get double points for hitting a convertible. Just make sure that you check the wind direction before releasing!
Last night on the way home from the bar, we stopped over I-44 for an Oklahoma Carwash.
by Bored Okie March 29, 2010