There was this little kid begging his dad for some money to play the game (light bulbs line the edge, they light up one after another and if you stop the light on a red bulb you win whatever that light corresponds to. It cost 50 cents per credit.), but the dad was telling him that it was a waste of money, you would spend more then the item was worth. I put in a dollar, and won on my second try. The father then tried to explain that it was luck, when my brother then came up and said, "So you won something out of that machine again?" I answered, "Yep." The look on the father's face was priceless.
The thing was, I used to play the game all the time. I had a friend who was horrible at the game, but had a lot of quarters. I convinced him that I was good at that game (technically a lie, I had never played the game before), so he let me play. I got lucky my first time, and thanks to the near unending supply of quarters from him, I got scarily good at the game.