Yellow polka-dotted spider
That she saw for the first time that day.
An itsy-bitsy, could be wider,
Yellow polka-dotted spider
Came and frightened Miss Muffet away.
She was afraid to go sit on her tuffet,
Eating her curds and her whey.
She was afraid to go sit on her tuffet,
But the spider just wanted to play.
One, two, three, four,
Tell the children why she swore.
These things happen when you have small children...
Update: Edited to add the verse...