Drinking a beer while pissing. Done to prevent losing alcohol when you break the seal. "Changing" or "changed" can be used depending on tense.
"Bro, we've only had 4 beers and you're pissing? Hold that shit in longer!"
"Dude, don't worry about it, I'm going to change the oil!"
by GiganticTumor May 1, 2010
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n.) A sexual maneuver performed in the shower where-in one partner squeezes an entire bottle of KY jelly into one of the other partner's orifices and precedes to fuck said orifice until such time as there is no KY left.

v.) The act of squeezing an entire bottle of KY jelly into your partner's orifice of your choosing and preceding to fuck said orifice until such time as there is no KY left while showering.
Kyle: Stacy came over last night and let me change the oil in the rain.

Robert: My God man, what did that take, like 4 hours?

Kyle: Yeah man, I've didn't know my dick could prune.
by housenog September 27, 2011
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The mechanic is a sexual position, which involves two people. One of them gets down on their hands and knees while the other slides underneath them and either pulls the man off or fingers the woman until they cum; changing the oil
We were so drunk lastnite we ended up doing the mechanic/ changing the oil
by aodhan18 April 14, 2010
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