A short rhyme built on the old superstition that spotting and picking up a pin brings good luck for the day. Its neat call-and-answer shape means it's easy to pick up after just a hearing or two.
From Mother Goose / Nursery Rhymes (traditional). See the whole collection.
See a pin and pick it up,
All the day you'll have good luck.
See a pin and let it lay,
Bad luck you'll have all the day.
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition