1 on 1 april 1998 the burger king company released an advertisement for a new hamburger called the 'Left-Handed Whopper'. the advertisement said that the new hamburger had the same ingredients as a regular whopper, but that the left-handed whopper was a special burger for left-handed prople. thousands of people went into burger king restaurants to ask for the left-handed whopper. they didn't know that it was an april fool's day joke!