Another funny blast from the past courtesy of the zany minds of Mad Magazine.

To the tune of "Frosty the Snowman" -

Harry the mailman brings us letters soaked with rain.
Jams the box so full that the mail is crushed
and then laughs when we complain.

Charlie the milkman is the biggest slob in town
Seldom leaves the quarts that we've asked him for,
when he does, they're upside-down.

Eleven months through-out the year, they're as lousy as can be.
But starting in December, they show great efficiency.
Then Charlie and Harry really show they're full of zip!
And they'll work that way every doggone day,
Til they get their Christmas tip!