This is a song about sexual ideas. Brian Wilson recalled: "At first, when I wrote the melody, I thought maybe it should be a love song. 'Cause it started sounding like a love song to me. And I tried a working lyric that had a lot to do with love and affection and that kind of thing. But I didn't like it. Most of the lyrics were romantic, but then I put in a couple of sexual lines. And then I said, 'Wait a minute. Let's get rid of some of the love aspects, the romantic aspects of this song, and put in more sexual lyrics.'"
David Bowie's "Space Oddity" tells the story of an astronaut who cuts off communication and floats into space. The BBC used it extensively in their coverage of the 1969 moon landing - an odd choice considering the lyrics.