My spelling is Wobbly. It's good spelling but it Wobbles, and the letters get in the wrong places.

Milne’s line turns a common anxiety—misspelling—into a childlike, imaginative explanation. By calling his spelling “good” yet “wobbly,” the speaker separates intention from execution: the knowledge is there, but the letters refuse to stay put. The humor depends on personifying spelling as something that can physically wobble, echoing the logic of children who explain mistakes through concrete, playful metaphors. It also gently normalizes error as a matter of unruly mechanics rather than stupidity or laziness, making the confession disarming and self-forgiving. In a broader Milne-like spirit, it celebrates linguistic play and the charm of imperfection.