A useful new invention. Originating in the mid-twentieth century, probably in the armed forces, this expression also can be used sarcastically; indeed, not everyone regards packaged presliced bread as a taste treat, although it is undoubtedly a convenience. In Britain it is also put as best thing since sliced bread. Rona Jaffe used the term in The Fame Game (1969): “You’re the greatest thing since sliced bread.” Numerous variants have arisen, such as the greatest thing since the hamburger, chewing gum, and indoor plumbing, but none became as common as sliced bread.