The SINGLE dumbest thing I've done while in the Garage

[RaggedGT]

I left a battery unattended and on charge for several hours,came back to a very swelled out battery with acid all over my work bench lol

 

[Mintsick]

Recently blew both brake lines from master cylinder to abs module in my Silverado. Limped it back home and was working on replacing the lines in the garage for several hours, could not get one of the flares to seal for the life of me. Got frustrated and went to call it a day, had the truck sticking out of the garage a couple feet so I had working room, forgetting what I was working on I started the truck up to move it in and dropped into drive...drove it right into my workbench at the back of the garage. Destroyed the grill, headlights/turn signals, creased both edges of the front fenders.