Okay, okay!! I think it's this one, secret verse two:

My grandfather said that of those he could hire,
Not a servant more faithful he found,
For it kept perfect time and had but one desire:
At the end of each week to be wound.
For it kept in its place, not a smile upon its face,
And its hands never hung by its side,
But it stopped short, never to go again,
When the old man died.

Words and music by Henry Clay Work, who was named for Henry Clay, whose father was Cassius Clay. Not a lot of people know that.

Steve (Michael Caine impressions a speciality)