I guess due to my age and I do stand-up comedy, I tell things that would probably best be kept to my self.
I had been having a problem with my throat and went to the doc. After looking down there with a scope she says, "I see some yeast down there, but don't worry I can give you a prescription for one pill that will take care of it."
I get home with my prescription open the package and the first line reads in bold letter: Your doctor has prescribed fluconazole for your vaginal yeast infection. (if you're reading this and can't figure it out by my name, I am a guy)
A friend had come home with me to work in the shop, so after I read that I put the package down and thought I'll just take this later. Then it occured to me that it might be funny. So, I read it to him and he laughed. My wife came up from the basement and saw the package, I didn't have to tell her what it was, she just laughed. I've used the story several times in stand-up and gotten pretty good laughs.