i was at a party and my friend was doing a keg stand on a dock and i guess he was a little to close to the edge and wound up losing grip with the keg and knocking it over, causing it to roll into the water. it sank like 20 feet and they lost like a full keg. its their faults for not keeping the damn keg in a bucket or basket with ice.. but they said it was "naturally cold." their loss