Lyric discussion by Chinup 

"Tomorrow who's gonna fuss" indicates to me that he couldn't care one way or another, because clearly the answer is "no one". The focus is more on the fact that "they love each other so".

Bob Stinson sometimes wore a dress on stage, if memory serves.

"And tomorrow Dick is wearing pants/And tomorrow Janie's wearing a dress" is saying androgeny is often just a phase of youth, without dismissing it. It's something that's been going on for a long time - taking traits of the other sex - it's not a big deal. It doesn't mean people hate their sex or want to change it, it's just something that people do and enjoy.

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