It's pretty cool, it was on the Chive as well. That's what I've been using as my signature. We only get 100 characters for our signature or I would have used all of it.
Versions have been around for decades. I remember one from when I was a kid (and that was a long time ago). "Now I lay me down to sleep, my '40 Ford parked on the street. If it should roll before I wake, I pray the Lord will pull the brake".