Well in primary grades in Nebraska it was cowboy and western things like "Home on the Range" and "Git along little Doggies", and we learned how to make flat pennies (when we could afford it) by putting them on the main line UP tracks, but by 7th grade we'd moved to Washington state, and it was "Acres of Clams" and a version of "The Black Ball Line", and we learned that a clam gun was what we used to call a spade. (Black Ball ran all the ferries on Puget Sound at that time, and some of our verses were parodies, built around the accidents the ferries had. The ferries had a knack for smashing up good docks, and trying to pass through log booms being towed by tugs (tugboats) nearly a hundred yards ahead of the boom.)