Doonesbury by Garry Trudeau for September 27, 1988
George Bush: ...And he's a card-carrying member of the boutique elite! Roland: Or is he? ABC News, playing a hunch. Has recently discovered that George Bush is no longer what he seems to be! In fact, the "new" George Bush is not George Bush at all! He is rather, none other than George Bush's evil twin, Skippy! Skippy: Damn! Man: Don't worry, Skipper, they can't prove it.