Howie and his sister Rhonda grew up in the 1970s. As passengers in their mother's car, they would shout, "Punch buggy blue" if they spotted a blue Volkswagen Beetle, "Punch buggy white" if they saw a white one, and so on. If both siblings shouted at the same time, the first to then shout, "Jinx Pepsi" would, hypothetically, be owed a Pepsi by the other. Similar games exist today. The punch buggy game is an example of:
