The Pirates of Penzance: "A Policeman's Lot"

AHHH
WHEN CONSTABULARY DUTY’S TO BE DONE, TO BE DONE,
A POLICEMAN’S LOT IS NOT A HAPPY ONE.
WHEN THE ENTERPRISING BURGLARS NOT A’BURGLING (not a’burgling)
WHEN THE CUT THROAT ISN’T OCCUPIED IN CRIME (-pied in crime)
HE LOVES TO HEAR THE LITTLE BROOK A’GURGLING (brook a’gurgling)
AND LISTEN TO THE MERRY VILLAGE CHIME (village chime)
WHEN THE COSTER’S FINISHED JUMPING ON HIS MOTHER (on his mother)
HE LOVES TO LIE A’BASKING IN THE SUN (in the sun)
AH, TAKE ONE CONSIDERATION WITH ANOTHER (with another)
A POLICEMAN’S LOT IS NOT A HAPPY ONE
AHHH
WHEN CONSTABULARY DUTY’S TO BE DONE, TO BE DONE,
A POLICEMAN’S LOT IS NOT A HAPPY ONE (happy one).