I've had a lot of stupid moments.

Like in the 6th grade at the school picnic. I was sure it was the correct trail off the main trail along the top of the cliffs -- it wasn't, and I ended up running, trying to keep my balance, and leapt over a 10 foot drop. Fortunately I only got a badly sprained ankle.

Or rapelling down a cliff, without harness (wrap the rope around your back and through your crotch...), using clothesline.

Or crossing a railroad bridge at night, fifty feet over the Mighty Mississippi, when you had to swing out over the river, climb down a ladder to the catwalk, and reverse the process at the other end, your only light from a cigarette.

Or....