did field work on Utah Lake, requiring us to take one of the department trucks and the department boat out. One summer, on two separate occasions, two people in my lab put the tailgate on the truck down before backing up with the boat trailer, jackknifed the trailer, and crumpled the tailgate.
I felt really bad the for the PhD student in the lab, who took a grilling for it both times even though he wasn't the one to do it.