A guy signs in for a laceration on his hand. When the nurse pulls him back, she asks if he did anything for it at home. He says he cleaned it out with hydrogen peroxide, then alcohol. Since alcohol seemed like such a good idea, he also decided to pour some beer in there too. After this torrent of irrigation, he super-glued the lac closed.

The night before, we had a guy come in with first and second degree burns over his face, arms, and chest from a welding accident. Before he left the house, he put vaseline over the burns. For my non-medical readers, this is a disaster because the ointment keeps the heat trapped next to they body, possibly causing worse problems than he started out with. With burns, rule number one is STOP the burning, not marinate in it.