Related to the long drill bits department...
I was once drilling a hole for a telephone cable. I wanted to run it inside of a closet, through the floor into another closet, and then down to the basement; I was going to staple the cable to the molding inside--should have been really easy and out of sight. I went downstairs to see how well I did...and saw the bit coming out of the living room ceiling.
Just as I was looking at the bit sticking out of the ceiling, making plans to clean it up quickly, my wife came home. You know, a metal d'versabit looks much, much worse up against white paint.
