"My <relative> is a __________! I know what I'm talking about."
Absolutely not. Co-worker was pissing brown and had severe back pain. Another co-worker was saying it was no big deal and that he was just dehydrated. I was trying to get him to go to the ER. After a day of nagging he did and come to find out he was going into Renal Failure. He had worked out so hard the day before that the proteins breaking down in his muscles were clogging his kidneys and killing him.
Told her to keep her mouth shut unless she knows what she's talking about. "Well, my brother's an army medic…"