Select two volunteers. You need rubber bands, alka-seltzer caplets, two pairs of swim goggles, two towels, and two squirt guns.
Place a rubber band around the forehead of each contestant and then slide an alka-seltzer tablet in between the rubber band and their forehead. Make sure they have their goggles on. Place them about five feet apart from each other. The object of the game is to squirt water at the opponents tablet and be the first to dissolve it. This is why you need towels. They will be squirting at each other and are not allowed to dodge or guard their caplet with their hand or squirt gun.