This thread was inspired by the funniest radio conversation thread.

What are some of the dumbest things passengers have said or done on one of your flights?

My personal favorite is when a pax refused to take off his headset during the FA brief. The FA's explained that the regs required him to comply with their instructions. He refused and demanded to see the captain. So the captain goes back there to confront him. The guy says, "I'm a private pilot and I know the regs! You guys can't just make up rules to feel powerful." The captain then calmly asked if the pax had ever read FAR part 121. The pax got a blank look on his face and said, "What is that? Part 91 is the regs you need to follow." Priceless.