Reference damaging one's male parts...whilst out in the back communial lawns flying my Chinook, something caught the corner of my eye. I lost concentration for a millisecond, but in that time the heli had turned full circle, and was flying backwards...straight into my 'gentleman's area'.
Now, as you'll know, a Chinook has a lot of blades which revolve at quite a high speed.
To say it hurt would be an understatement...