One more that's semi race related (involving a boat on the trailer)...
Don't back it in the drive way and raise the jack to get it off of the ball...
...and get interupted by a land line phone call...
...then get distracted in the house and then realize you're late to pick up your wife...
...and you jump in the truck ASSuming you unhooked the safety chains and light cord...
See, as you drive away in a hurry the noise will get your attention in a hurry.
I bet you now know how I know, don't cha?
