I used to work with a guy that we glossed "The Professor" because he was in charge of teaching new employees how to do their job. His wife was involved with data entry for ER cases. He had all kinds of stories about the things people came into the ER for. One of the worst ones though involved a person trying to do the "put a gerbil where gerbils ought not go" thing, only he didn't have a gerbil available, so he used a mouse. Mice as most people know, are adept burrowers. Apparently, he succeeded in getting this mouse into the place he was trying to get in, but it felt compelled to burrow its way out. That story made me wince visibly when he told it.