Divide the guys into two equal teams. Each team is given a triangular piece of cloth and two baby pins. One by one, each player looks on as he is diapered by his teammates. The one being diapered can not lend the others a hand! Once the diaper is completely on, the diapered player quickly acts out a 'poo moment' and team members remove the diaper. The next player on the relay team then takes his turn wearing the baby garment. The first team to complete the relay is the winner!
Gifts for the winners and losers
Have a female guest take pics of each team member donning his diaper. Announce the winning team will not have their pics posted on FaceBook or forwarded onto friends by email. Whether you follow up on this threat is up to you!