well the dumbest thing ive ever done would be
the 86 i sold, but was able to buy it back for less than i sold it for so it was fine. i also tried to teach someone to drive a stick in it, he didnt want to listen to me and thats how i found out a 23year old ranger with a 2.0l will still do a burnout.
the 88 ex-cab ran it about 7 miles with no anti freeze after it blew a lower radiator hose, it was a 2.9l but i somehow managed to not crack the heads and drove for awhile afterwards.
i also let mom drive to work on a snowy day and she hit a patch of black ice and hit mailbox doing about 50mph sideways and destroyed the bedside. she got lucky because as she went across the road she missed 2 hude ditches by less than 2 feet, and if she would have hit one of them she would have rolled it.
the 88 BII i ran it 3 miles with no antifreeze after blowing a freeze plug. it had water in the oil so i bought a fullsize dodge van, worst decision ever, later found out it was just an intake gasket so fixed it and drove it for awhile then was forced to sell it.