so I’ll go with:

If the rain comes
They run and hide their heads
They wight as well be dead
If the rain comes.

When the sun shines
They slip into the shade
And sip their lemonade
When the sun shines.

Have you seen the little piggies
Crawling in the dirt
And for all the little piggies
Life is getting worse
Always having dirt to play around in.

Have you seen the bigger piggies
In their starched white shirts
You will find the bigger piggies
Stirring up the dirt
Always have clean shirts to play around in.

In their styes with all their backing
They don’t care what goes on around
In their eyes there’s something lacking
What they need’s a damn good whacking.

Everywhere there’s lots of piggies
Living piggy lives
You can see them out for dinner
With their piggy wives
Clutching forks and knives to eat their bacon.

The Ballad of John and Yoko

but that’s a little too obvious.

More obliquely, I’m going with:

I told you about strawberry fields,
You know the place where nothing is real
Well here’s antoher place you can go
Where everthing flows.
Looking through the bent backed tulips
To see how the other half lives
Looking through a glass onion.

I told you about the walrus and me-man
You know that we’re as close as can be-man.
Well here’s another clue for you all,
The walrus was Paul.
Standing on the cast iron shore-yeah,
Lady Madonna trying to make ends meet-yeah.
Looking through a glass onion.
Oh yeah, oh yeah, oh yeah.
Looking through a glass onion.

I told you about the fool on the hill,
I tell you man he living there still.
Well here’s another place you can be,
Listen to me.

Fixing a hole in the ocean
Trying to make a dove-tail joint-yeah
Looking through a glass onion