Kurt Vonnegut Jr. was a writer most famous for being one of the smartest motherfuckers to sit at a typewriter, purely based on the fact that he added aliens to World War II and shit out a literary classic.
The Caricature: The signature itself is surrounded by a caricature of Vonnegut himself, making sure that anyone who attended a book signing would, "Never forget what I look like, mother fucker!"*
Note: This may not be something he ever said, ever.*
The Afro: Vonnegut was sure to include the glory of his perfectly groomed afro in the caricature. The most notable feature of the fro is its striking resemblance to Albert Einstein's. Genius flocks to the afro.
The Mustache: His signature has a fucking mustache! This makes John Hancock's signature look like a bitch.