A few years ago, I was with my mom at the Health Department (she was getting some birth control pills and I was getting a booster shot. Yes, I was that little), and there was this woman there, ahead of us, trying to get more birth control pills.
The nurse said to the woman: "What are you doing back so soon? We gave you a six month supply--it's only been three months!". It turns out that the woman had been giving the birth control pills to her husband as well as taking them herself. Even though I was about six years old, that STILL made me face-palm.
So, who is the stupidest person you've ever seen?