The version I remember was (and cover your ears, Teabag*):

Little boy kneels at the foot of the stairs,
Clutched in his hand a tuft of white hairs.
Goodness gracious, fancy that!
Christoper Robin's castrated the cat.


(But I bet he charges a lot less than my vet!)



*Teabag being the name of the cat that bites my toes most mornings. Don't ask why; there's no sensible reason. Just never name a cat when pissed. Could have been worse, though. He was very nearly Kitten Tikka.