vonne_nut comments on What is something someone said to you that made your brain hurt because it was so stupid?

I was in the car with my sister and one of her friends once, and we drove past a marsh with a bunch of cattail plants in it. My sister said "Look, cattails! Did you know Native American women used to use them as tampons?" Her friend said "GROSS!" then was quiet for two minutes, then said "God, you'd have to catch a lot of cats!"