Top Definition
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
1 more definition
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

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