The synergistic "Super-bug" that is spawned when an individual becomes infected with the influenza and pnemonia at the same time. This is more sinister than the dreaded bird and/or swine flu...and is more on-par with the fabled SuperFlu from the movie "The Stand".
Patient - Yo, I don't feel so good doc.
Doctor - Well I declare...you must have a case of the flu.
Patient - Yo, I feel worse now doc.
Doctor - For Pete's sake, it appears you now have pnemonia.
Patient - Does that mean I have Flumonia?