In truth, "GUIDO" is actually an Italian name which I believe was taken from the name of a saint.

It later became a slang term used in describing lower class hard working Italians and in using it in this capacity it was considered an offensive and racial slur by many hard working Italian people. I agree that if used in this capacity, it is an offensive and unacceptable racial slur.

It is now used to describe Italian males who drive around in cadillacs, wearing guinea tee shirts while slouched over towards the center of the car seat with a cigarette dangling out of the side of their mouth, and acting like loud mouth cavones.

Heck, I myself use the term "Guido" when I encounter these kinds of cavones even though I'm from an Italian background. These types of cavones are offensive and give a bad name to the Italian heritage in general.

As Geoff said, that does not mean that every Italian is a guido.