This is from The Nursery Rhymes Of England (Halliwell, 4th ed. 1846):

They that wash on Monday
Have all the week to dry;
They that wash on Tuesday
Are not so much awry;
They that wash on Wednesday
Are not so much to blame;
They that wash on Thursday,
Wash for shame;
They that wash on Friday,
Wash in need;
And they that wash on Saturday,
Oh! they’re sluts indeed.