What is the fuzz tone? In understand overdrive and distortion and kind of know the history behind these (overdrive sound being the tone that early electric players got by turning up the volume and over driving the tubes with signal, thus a distorted sound).

In my mind fuzz is sort of over driven sound you get from fender amps I don't know. What is it? Examples too please
Fuzz tone is the tone you get from fuzz pedals, like Tonebender, Fuzz Face and Big Muff. Isn't that obvious?