“Why would he fall in?”

Pooh rubbed his nose with his paw, and said that the Heffalump might be walking along, humming a little song, and looking up at the sky, wondering if it would rain, and so he wouldn’t see the Very Deep Pit until he was halfway down, when it would be too late.

Piglet said that this was a very good Trap, but supposing it were raining already?

Pooh rubbed his nose again, and said that he hadn’t thought of that. And then he brightened up, and said that, if it were raining already, the Heffalump would be looking at the sky wondering if it would clear up , and so he wouldn’t see the Very Deep Pit until he was halfway down.⁠ ⁠… When it would be too late.

Piglet said that, now that this point had been explained, he thought it was a Cunning Trap.