New trailer first oops

I know a guy who thought he had enough height to clear a log with his bumper while backing up solo. He had enough room for the bumper... but not for the gray water waste line. Cost him $500 in repairs for the pipe and crushed propane fitting. I hear he had to make up a crazy story about wild animal gangs, vandalizing the trailer in the middle of the night or something, to explain to the DW how it possibly could have happened.