So you go into a room. There are two computers and two doors. Door A and door B. One is the entrance to eternal happiness, the other leads to certain doom. Your job is to figure out which is which. You are allowed to ask one computer one question and one question only. One computer always tells the truth the other always lies. What would you ask?
If you already know the answer hold off for a while and let everyone have a chance to guess. :-)
You ask each computer, What would the other computer say?. say the correct door is door A. So say you asked the liar "What would the other computer say?" Well, the liar would know the other computer was honest and he would say the A, but since the liar lies, he would say B. If you asked the other computer the same question, he would say B, because he knows the other computer will lie. Therefore, you would know that the correct door was A.
If you are a dog and your owner suggests that you wear a sweater, suggest that he wear a tail.
A man who lives in a lighthouse wakes up one night, goes down the stairs, doesn't turn the light on, makes and sandwhich, and goes back to bed. When he wakes up in the morning 300 people are dead because of him. Why?