Top Definition
Someone with little actual mechanical knowledge who shoots up and then goes and works on his girlfriends car. The result usually being that the car will no longer run.
Shawn the methchanic and crack back Jack tried to work on Amy's car when they were high and now she can't get her kids to school.
#mechanic #methamphetamine #car #idiot #broken
by tragicbeautiful June 27, 2008
5 Words related to methchanic
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