John Mulaney told Jimmy Kimmel Tuesday night that, if he had been “full fired” instead of “half fired” from his job hosting ABC’s “Jimmy Kimmel Live!,” then the comedian would have praised him as late night’s “kindest” and “coolest” guy rather than “The Late Show” host Stephen Colbert. “Our friend Stephen Colbert, he’s only got weeks to live,” Kimmel joked early in his conversation with Mulaney, clarifying, “By live, I mean on television.” The “…