Joe Posnanski from SI.com made this one up.
If you see the Kansas City Chiefs give up against the Philadelphia Eagles like they did on Sunday, you might say: "This is the worst football team in the history of the NFL." That too would be a fanbole. The Chiefs are terrible, but they are probably not the worst team in NFL history. Probably not.
You call a player the worst ever, a coach a genius, a general manager an idiot -- these are probably fanboles.