First purchase a box of baker’s chocolate. Break it into the smaller pieces and serve it on individual plates of however many you like (recommend no more than 5). Tell the youth whoever finishes the chocolate first wins the prize (candy, cd, ect.). Have them look at it, touch it, and smell it to confirm it is chocolate. Then say GO and watch the fun. Some may quit after the first taste, but there is always someone who wants to win. When the winner is announced, ask each youth that tasted it what it was like. Ask them if they could tell it was any different than regular chocolate. Then proceed to explain how sin can look so good from every angle, but after you get into it, it leaves a bad taste in your mouth. Then discuss with the group sin through either testimony, sharing, or scripture. The ones that are involved in eating it will remember that topic very well.