You've Got Crabs

You’ve got crabs is a team-based party game from the creators of Exploding Kittens and the Oatmeal. Try to collect four of the same card before any of the other teams, then pass a secret signal to your teammate. If your partner sees your signal and yells, "you've got crabs," you gain a point. If an opponent sees your signal and yells, "you've got crabs," you lose a point. The team with the most points wins the game.
This game is great for parties, or weddings, or long nautical voyages.