Question: There is a guy in a parade. The crowd says that he has eyes that never blink, but he says he can see them. They also say that he has a mouth that never moves even though he can hear them talk to him. How is this possible?
Answer: He is wearing a mask.
Question: A semi truck weighing exactly 10,000 pounds gets onto a bridge that is 100 miles long. The bridge's weight limit is exactly 10,000 pounds, any more will break the bridge. After going about 80 miles down the bridge a small bird lands on the truck.
Answer: Nothing, after traveling 80 miles the truck will have surely burnt enough fuel to allow the bird to land on the truck without breaking the bridge.