Okay, so here's a SHT that didn't turn out bad, thank God! I took my boat over to get it winterized and didn't realize until I pulled into the lot that I had forgotten to lock the hitch to the ball.
I had lowered the trailer down, picked the wheel up, hooked up the chains, lights, etc...but I never did push the lever down to lock it on to the ball. Luckily I didn't hit any bumps along the way!
Boat made it there safely and is now in my driveway ready for storage.