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.
by xXxX June 12, 2013
by CON-CON_24 February 9, 2023
1. It was a crying shame to watch the election until someone gave Hillary Clinton an oil change.
2. I checked my car after the mechanic gave my car an oil change and the front seat had motor oil in it.
3. Girl you'd better get your oil change today, Billy Mays here.
2. I checked my car after the mechanic gave my car an oil change and the front seat had motor oil in it.
3. Girl you'd better get your oil change today, Billy Mays here.
by 400 Queseritos October 11, 2016
by StalkerMunkie October 24, 2007
The act of inserting a funnel into someone's asshole and then spewing your own diarrhea into said funnel.
My girl wanted a Cleveland Steamer last night. I wasn't feeling well so my poop wasn't solid. We opted for an Oil Change instead.
by TR653 August 28, 2008
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
It's where you suck a dick til orgasm, keep it in your mouth, then blow it in the asshole, then feltch it back out and swallow. I don't advise it.
by joosht March 19, 2009