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How many of you remember the San Diego chicken, and the impact it made on costumed characters in the world of sports? The Chicken made such a "flap" that he spawned many imitators, forcing the Chicken to go out an defend his legal rights. I believe "The Famous Chicken" is the San Diego Chicken, who changed to a more generic name because he branched out beyond San Diego.
Note the whimsical way they packaged the gum in a pouch like chewing tobacco. An adult taste treat the kiddies could look forward to!