Here's a paradox. Please think if more. <><><><><><><><><><><><><><><> The bottom sentence is true. The top sentence is false.
A man runs a barbershop where he only shaves people who don't shave themselves. Does he shave himself?
A slim crocodile living in the Nile took a child. His mother begged to have him back. The crocodile could not only talk, but was also a great sophist and stated, "If you guess correctly what I will do with him, I will return him. However, if you don't predict his fate correctly, I'll eat him." (got it from a website)