I have an early Pete Seeger live concert album where he is talking about how songs change. He sings the John Peel song and then says that he was singing it for some school kids who said, we sing it this way:

Pepsi Cola hits the spot ties your belly in a knot tasts like vinegar looks like ink Pepsi Cola is a stinky drink!

PS -- The English constables take their nickname, a bobby, from Sir Robert Peel.