rapparee, that "Don't Swat Your Mother" lyric recalls
Brendan Behan's doggerel from his "The Hostage."

There's no place on earth like the world,
There's no place wherever you be,
There's no place on earth like the world,
That's straight up and take it from me.

Never throw stones at your mother,
You'll be sorry for it when she's dead.
Never throw stones at your mother,
Throw bricks at your father instead.

The South and the North Poles are parted,
Perhaps it is all for the best;
Till the H-Bomb will bring them together,
And there we will let matters rest.