I would like to offer you the game for the friend's party. You need 2 pairs of boxing-gloves, 2 covered chocolate bars, and 4 players.
Announce to everybody the incredible fight between 2 very strong persons. Part 4 players for two teams. One is a main player another one is an assistant. Ask the assistants help to put the boxing-gloves on the player's hands and prepare him/her to the fight (a little bit of massage or something like this…)). Than ask the players to shake the hands before the game. And at the end you have to offer the players to open the chocolate bar holding it in hands covered with boxing-gloves! And tell them not to forget to feed the assistant! I promise you will have really good and funny party!