"Stick close to your desk, and never go to sea,
And you may be the ruler of the Queen's Nav-ee."
Congressman Billybob
Here's a bonus selection, not quite as apt but impossible to pass up, from The Gondoliers:
In enterprise of martial kind,
When there was any fighting,
He led his regiment from behind --
He found it less exciting.
But when away his regiment ran,
His place was at the fore, O --
That celebrated,
Cultivated,
Underrated
Nobleman,
The Duke of Plaza-Toro!