Jack Sprat and his wife make an odd but tidy pair, one who can't eat fat and one who can't eat lean, licking the platter clean between them. Six lines and done, which makes it one of the easiest rhymes in the whole collection to learn by heart.
From Mother Goose / Nursery Rhymes (traditional). See the whole collection.
Jack Sprat
Could eat no fat,
His wife could eat no lean;
And so,
Betwixt them both,
They licked the platter clean.
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition