ETA -- I went to Wikipedia's entry on Summer Is Icumen In to get the correct spelling for "Icumen" and found the following parody by Ezra Pound. It's too good not to share.
Winter is icumen in,
Lhude sing Goddamm,
Raineth drop and staineth slop,
And how the wind doth ramm!
Skiddeth bus and sloppeth us,
An ague hath my ham.
Freezeth river, turneth liver,
Damm you; Sing: Goddamm.
Goddamm, Goddamm, 'tis why I am, Goddamm,
So 'gainst the winter's balm.
Sing goddamm, damm, sing goddamm,
Sing goddamm, sing goddamm, DAMM.