Prepare beforehand by spreading out plastic on your stage area. Try to find a place where everyone can see someone lying down.
Get 2-3 pairs to come up front. Have one partner lay down on the plastic and the other to stand above them with a small cup of chocolate syrup. The “dropper,” standing straight up (no bending to get a better aim) dunks marshmallows into the chocolate syrup and with his or her arm straight out, drops it into the mouth of the person on the floor. Points are awarded for the number of marshmallows eaten.