You need two eggs for every player All are hard boiled except for one . A plastic table cloth or sheet along with paper towels or wipes would also be a good idea.
Place a bowl of eggs on the table. All of them are hardboiled except for one. Each player takes a turn taking an egg and breaking them in one smashing motion on their foreheads. They must take whichever egg they first touch. Hope that you don't get the one that is raw!