Riddle: A man is going to be sentenced to four or six years in prison, the judge said to him "You can say one statement, if it is true you will be sentenced to four years in prison, if it is false you will be sentenced to six years in prison". After the man said his statement the judge decided to let him go. Whatdid the man say?
Answer: He said "You will sentence me to six years in prison". If it was true, the judge would have to make it false, so instaed of contrversing his own word he decided to let him go.