It's a charming little song,
A Christmas hit for "Wings"
So what is it that makes me smile,
When Paul McCartney sings?...

Well, I'm afraid that title,
Once had a different sense,
A guideline used by censors,
Who checked films for offence.

The Mull, on maps of Scotland,
Sticks out at an angle,
That was the legal limit,
An actor's "part" could dangle.