Anyone who says someone's lyrics don't make sense because they "were on acid" or whatever, is giving them too much credit. As a songwriter who has written nonsensical (i.e., bad) lyrics before, I can tell you it's pure laziness. It kind of goes like this: You have a song, but don't have lyrics. But you're a singer, you need to sing something, the melody is good, the vocal is strong, and you have a deadline to finish the song. So you dash something off quickly, maybe with the intention of replacing those "temporary" "scratch" lyrics with something good. But you never do. Because writing a good set of lyrics is friggin' hard, and most people aren't good at it. You also know that if the vocal and melody is good, many people won't care, and will still like the song. So your "scratch" lyrics become the actual lyrics (Su Su Sudio, anyone?) Before Dylan, no one would be able to get away with that kind of crap. Your song had to make sense, even if it was a standard "I love her, she loves me" type of lyric. On the flip side, there are guys like Roger Waters and others, who work hard to write great lyrics and consider it a priority.