"Now Miss Simpson said... She teaches school, you know - Yeah, she took us there. Well, Miss Simpson said - If we counted every head on these quadrupeds, Then multiplied that number by four, We'd know how many feet went through the door, If we turned 'em all loose. Oh no, don't do that! It's really a groovy zoo. But, anyway, what Miss Simpson said, It was a good chance to work on our fours in our head. One, two, three, four!"
January 1, 1970
https://en.wikiquote.org/wiki/Schoolhouse_Rock!