COKE
A man walks up to a Coke machine and puts in a coin. Out pops a coke. The blonde looks amazed and runs away to get some more coins. He returns and starts feeding the machine madly and of course the machine keeps feeding out drinks. Another person walks up behind that man and watches her antics for a few minutes before stopping him and asking if someone else could have a go. The man spins around and shouts in his face: "Can't you see I'm winning."