and ways be foul

"and ways be foul" is one of my favourite phrases from Will S.

When icicles hang by the wall,
And Dick the shepherd blows his nail,
And Tom bears logs into the hall,
And milk comes frozen home in pail,
When blood is nipp'd, and ways be foul,
Then nightly sings the staring owl,
To-whit! To-who!-a merry note,
While greasy Joan doth keel the pot.

When all aloud the wind doe blow,
And coughing drowns the parson's saw,
And birds sit brooding in the snow,
And Marian's nose looks red and raw,
When roasted crabs hiss in the bowl,
Then nightly sings the staring owl,
To-whit! To-who!-a merry note,
While greasy Joan doth keel the pot