A tiny four-line drama: a girl, her snack, and a spider that sends her running. The curds and whey are unfamiliar to most modern toddlers, which makes it a natural moment to stop and explain what they are before the spider arrives and gets the giggle.
From Mother Goose / Nursery Rhymes (traditional). See the whole collection.
Little Miss Muffet
Sat on a tuffet,
Eating of curds and whey;
There came a big spider,
And sat down beside her,
And frightened Miss Muffet away.
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition