What was the biggest flub on a trip?

Was trying to get on the road for a two week trip to Yellowstone. I got a very late start and got a couple hours rest at Wallyworld after driving all night. I got to the West Yellowstone KOA at 7 the next night, exhausted. All I wanted was food and sleep. I went to unhook the camper at the campsite and realized the key for new lock I had put on the trailer tongue was sitting on my dining room table at home.

Campground staff was great, they cut the lock off with bolt cutters. They had a small grill/restaurant that was closed for the day. Evidently they must of felt sorry for me they turned the grill back on and cooked me a burger and fries.