Spin a coun a People sometimes decide something by throwing a coin into the air and guessing Which side of it will be facing upwards after it falls. The side of the coin which has a persons head on it is the heads The side without a persons head on it is the "tails. Hence the proverb"Heads I win, tails you losespin a coin ◼ People sometimes decide something by throwing a coin into the air and guessing which side of it will be facing upwards after it falls. The side of the coin which has a person’ s head on it is the “heads. The side without a person ’s head on it is the “tails”. Hence the proverb “Heads I win, tails you lose