I was singing this song with my friend, and we were talking about being gay and I said "Yeah, and they'd listen to 'Life on Mars'" and he said "Why?" and I said "Because it says 'Look at those gay men go'", and he fell about laughing and said "It's not GAY men, it's CAVE men!" We had a long argument, and then both went home and looked up the lyrics, and he proved to be the right one.