Characters
I am a Bear of Very Little Brain, and long words Bother me.
— Winnie the Pooh ‧ Winnie the Pooh

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Pooh explains his difficulty with elaborate language through a frank account of himself. The capitalised self-description makes the admission feel almost official, while the final complaint keeps it personal. The humour comes from plain speech doing its job perfectly as it explains why complicated speech can be troublesome.
Context reviewed