Coin flip and coin toss is essentially the practice of tossing a coin up in the air and guessing which side will land face up. There are just two outcomes, heads or tails.When the coin is thrown in the air, it should rotate several times before landing on the ground, or caught and inverted by a chosen person. The parties select their prediction by calling out heads or tails either before the coin is tossed, or when it is spinning in the air. Once the coin comes to a complete rest, the party who guessed correctly is declared the winner.In rare circumstances, the coin may land on its edge, yet the chances of this happening are somewhere around 6,000:1, and the online coin flip simulator does away with this slim possibility. However, in this case, the coin is generally re-flipped.