When a Felon's not Engaged in His Employment
Gilbert and Sullivan, 1879, Pirates of Penzance.

Sergeant- When a felon's not engaged in his employment
Police- His employment.
Sergeant- Or maturing his felonious little plans-
Police- Little plans.
Sergeant- His capacity for innocent enjoyment-
Police- 'Cent enjoyment.
Sergeant- Is just as great as any honest man's-
Police- Honest man's.
Sergeant- Our feelings we with difficulty smother-
Police- 'Culty smother.
Sergeant- When constabulary duty's to be done-
Police- To be done.
Sergeant- Ah, take one consideration with another-
Police- With another.
Sergeant- A policeman's lot is not a happy one.
Police- Ah!
Sergeant & Police- When constabulary duty's to be done, to be done,
A policeman's lot is not a happpy one, happy one.

Sergeant- When an enterprising burglar's not a-burgling-
Police- Not a-burgling.
Sergeant- When the cut-throat isn't occupied in crime-
Police- 'Pied in crime.
Sergeant- He loves to hear the little brook a-gurgling-
Police- Brook a-gurgling.
Sergeant- And listen to the merry village chime-
Police- Village chime.
Sergeant- When the coster's finished jumping on his mother-
Police- On his mother.
Sergeant- He loves to lie a-basking in the sun-
Police- In the sun.
Sergeant- Ah, take one consideration with another-
Police-With another.
Sergeant- A policeman's lot is not a happy one.
Police- Ah!
Sergeant & Police- When constabulary duty's to be done, to be done,
A policeman's lot is not a happy one, happy one.