I AM NOT one of the ones that HAVE NOT done this.....so I will share my story.
When I was a young plumber, we were putting some water heaters in the attic of 2 houses if I remember correctly, anyway.......
The first one, the other guy went up first, and as soon as his second foot got up in the attic, boom, straight nut shot, both legs full force though the ceiling.
After he recovered, and I recovered from laughing, we finished the job and went to the next one right next door......
Of course, I had to go first on this one, and sure enough as soon as I got up there, like a ding bat, boom, same thing, same exact spot as the other fella.
Dont feel bad, if you aint fell through the ceiling, you aint a real man.