The reference, good villein, is to Frederick C. Crews, The Pooh Perplex: A Freshman Casebook (New York: E. P. Dutton, 1963). I refer specifically to "Poisoned Paraise: the Underside of Pooh" by Myron Masterson (p. 41ff).

I also refer you to Karl Anschauung's "A. A. Milne's Honey-Balloon-Pit-Gun-Tail-Bathtubcomplex" in the same work (p.125ff).

Are you now satisfied? One would think that any man or woman of letters would have caught the reference as quickly as one to, say, Hamlet.