Big Bad John was such a major hit, it spawned a whole industry of followups and parodies:
http://en.wikipedia.org/wiki/Big_Bad_JohnI do distinctly have a memory of hearing, only once, one called "Big Fat Juan." All I remember is some line about "this man made of smell." Being a 4th or 5th grade boy at the time, I had no idea how blatantly racist the song was; it just seemed funny to me at the time.