I am the last person to know this

Sitting here, listening to music and the song How Soon Is Now? by The Smiths comes on. Fair enough, I really like this song. But Amazon Music has a feature that shows you the lyrics for some songs. I have it turned on and I discovered that the opening line is “I am the son and the heir”. All this time I had been hearing it as “I am the Sun and the Air”. I didn’t get it, but, whatever. I’m not sure it makes a lot more sense, but I’m glad to know what’s up.