You would not believe how long it took me to figure out what the "E" on the dash of my first car meant!! Or why the car would not move when the orange needle was on E!
(it was more a case of just not paying attention, honestly!!) It got to be such a running joke that everybody bought me gas cans for my b-day one year! E does not mean Enough!
Most recently I had my jeep roll off a set of ramps and into the yard! I forgot to block the wheels and was doing some front end work and its a full time 4wd.
Or the time the mom-inlaws garage almost burned down because of a faulty oxy/acetelyne (sp?) regulator and weak hose! not entirely my fault, I swear!
Luckily nobody has been hurt due to my... uhh ...stupidity.