If you were old enough to eat a Big Mac in the 1970's, you probably knew the Big Mac Song.  When the commercial played, I would just shake my head in wonder at the boobs who couldn't remember "Two all beef patties, special sauce-lettuce-cheese, pickles - onions, on a sesame seed bun."  I mean really.  I think that might have been one of the first times I considered the idea that big companies didn't use "real people" in commercials.  For me, this is a great 70's memory.  Maybe it is because a trip to McDonald's was considered a treat.  I don't know.

The Big Mac was introduced in 1968.  The song came along in 1974.  The commercial below is from 1975.  I knew all of the words.  ALL of my friends knew the words.  Assuming you were born, did you?

According to Wikipedia, the song ad only ran for a year and a half.  I guess that was one heck of a jingle.  I still remember it word for word and note for note.  By the way, that link also has a listing of the count on Big Mac Calories for different countries.  Surprise...The U.S. has the highest!  I couldn't find any proof online, but I sort of think the Big Mac has shrunk over the years.  Take a look and compare.