Is your heart already taken by a sexy mechanic? He’s the bolt to your nut and the piston to your cylinder. He gets your motor running at the end of a long day. Tell the world your mechanic boyfriend is already taken by a girl who’s hotter than a smokin’ hot rod with these mechanic girlfriend shirts. You don’t care if he’s covered in oil and grease at the end of the day as long as he can make your motor run.