Bonehead move of the day.

Oh my. Sign me up for a membership please!

How about backing the truck partway into the garage to load stuff then pulling out but forgetting the door to the camper shell was still open. The handle catches the upper garage door frame tearing it off while yanking the camper shell door into pieces of scrap metal.

Not being satisfied with this brilliant move I did it a second time a few years later.

And then there was the trailer episode where I pulled my flatbed with a 2-5/16" hitch but didn't check the ball on the truck which was 2". It worked fine till I hit a hump on a bridge transition which tossed the trailer just high enough to fall off the ball on the freeway. The breakaway and safety chains saved the day but it was more excitement then I want to go through again.