A mechanic's arm is what happens when you wanktoo much; one arm becomes more muscular than the other. Someone who lies on their back all day tightening nuts.
John: "Jaidon, you've probably got mechanic's arm from her Facebook photos".
Contrary to popular belief, Mechanic Falls is not a shit hole. It is a quaint little town set in Androscoggin, Maine. If you really want a shit hole go to Lewiston, Maine it is full of scary, creepy drug addicts.
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