Running out of gas...
... is always embarrassing (not to mention annoying), but when your shoveling out your car, and it's idling, it's almost funny.
The nice thing about it is that you're near your house, so you can just go inside, get your wallet, walk 200 yards to the gas station, leave them your driver's license, and fill up their 2 gallon can and get your car going. The lame thing was coming back to the car, and shoveling for another ten minutes.