Top Definition
Before you ream a chicks ass you should always test the oil, to make sure her chocolate star fish is clear. This is done by going at it doggy style and in the process wopping a digit up the ass and pulling out to see if it is clean and safe to proceed. If all is good have fun, if not grab her hair and use it to clean your finger as if cleaning a dip stick on a car.
"Dude last night went to fuck this chick ass but lucky I remenbered to test the oil first or I would have been a mess, she was full to the max level"
by littel Jon March 05, 2007
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