Cottleston, Cottleston, Cottleston Pie,

A fly can't bird, but a bird can fly.

Ask me a riddle and I reply:

"Cottleston, Cottleston, Cottleston Pie."

Cottleston, Cottleston, Cottleston Pie,

A fish can't whistle and neither can I

Ask me a riddle and I reply:

"Cottleston, Cottleston, Cottleston Pie."

Cottleston, Cottleston, Cottleston Pie,

Why does a chicken, I don't know why.

Ask me a riddle and I reply:

"Cottleston, Cottleston, Cottleston Pie"

Winnie-the-Pooh, as quoted by Benjamin Hoff in The Tao of Pooh, where the "Cottleston Pie principle" is explained. At its core: why does a chicken? - I don't know why!