Top Definition
When an athlete who does drugs has a drug test, and they go to the doctors so they can get there urine switched with clean urine through a giant tube inserted through your penis hole.
Sorry I was late Jake, I had to get my oil changed before Coach gives us another drug test.
by Stealth Money January 23, 2004

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A way for an athlete to pass a drug test by inserting a tube up his urethra(penis hole), then inject clean urine in through the tube.
"We need a urine sample from you, Mr. schwarzenegger.

Arnold mutters -" I'll need an oil change"
by whosucks March 24, 2010

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If you do drugs and need to pass ampiss test, a P-vac isn't an option and you need clean urine, you'll need to do an oil change. An oil change is when you stick a sterile tube in your urethra until urine naturally comes out. Next take a syringe full of clean urine and inject it into the tube. There, your oil is changed.
The test is tomorrow, we'll never pass unless we do oil changes.
by xXxX June 11, 2013

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The act of a man inserting his penis into a woman's anal cavity and pulling it out with poop on the head of his penis, then inserting it into another woman's anal cavity, thus causing some sort of exchange of bodily fluids
Man, he gave me a real good oil change!!
by creamcheeseee October 13, 2016

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When a wrestler or any other person uses their finger to get an advantage over other by sticking their fingers in their opponents anus.
Michael was wrestling and gave his opponent an Oilchange who then shriveled up and forfiet the match.
by Anusmaster101 March 09, 2016

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To have sex after a long period of absentience.
Ashanti finally had his oil change after 2 months of being single.
by Nefearious K. December 20, 2004

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When you are sitting on the toilet, and the act of your poop dropping into toilet water, followed by the toilet water splashing up onto your anus.
Hey, Tom, how was your bowel movement?" "It was good, had an oil change which made the cleanup easier."
by PrescriptionK January 31, 2011

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