The Exploding Wallet

                Your walking down the street in the middle of the day. You accidentally drop your wallet. Someone picks it up and hands it to you. You thank them as they walk away. You couldn't make out their even though it took along time to make the reaction. Then all of a sudden the wallet explodes in your face covering you in colourful die. It wasn't a loud bang but powerful enough too spray you. Everyone on the street is laughing at you. Then you awaken wondering what was going on.

Now what was that all about?