A man goes to a Bank with a Gun and demands money. When he is given the money, he turns to a Customer and asks: "Did you see me rob this Bank?"
Customer Replies: "Yes Sir, I did"
The robber shoot him instantly, Then he turned to a couple standing next to the dead body and asks the Husband: "Did you see me rob this Bank?"
Husband Replies: " No Sir! I did not, but my wife did.

Moral: When opportunity knocks, Make use of it!