A customer interaction for the ages.

Lady Customer: Is there any dairy in the butter croissant?
Me: *blank stare*
Lady: I know there's butter, my mom can have butter, just not milk.
Me: Well...it's real butter, so there is milk.
Lady: Can you go check the packaging for me to see if it says "milk" in the ingredients, dear?
Me: Of course. *Goes into the back to tell Joe this mindblowing tale.*
A few minutes later..
Me: Yes, it does say milk in the ingredients.
Lady: Do you have any pastries without milk?
Me: They all have milk, I checked them all to make sure.