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.
About this rhyme
One of the oldest bits of everyday superstition still going: spot a pin on the ground, and whether you bend down for it is meant to set your luck for the day. Children still say some version of this. Next time one turns up on the floor, it's a ready-made reason to stop and pick it up together.
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition