A quotation

Nicholas was not to be of the party; he was in disgrace. Only that morning
he had refused to eat his wholesome bread-and-milk on the seemingly
frivolous ground that there was a frog in it. Older and wiser and better
people had told him that there could not possibly be a frog in his
bread-and-milk and that he was not to talk nonsense; he continued,
nevertheless, to talk what seemed the veriest nonsense, and described with
much detail the colourations and markings of the alleged frog. The dramatic
part of the incident was that there really was a frog in Nicholas' basin of
bread-and-milk; he had put it there himself, so he felt entitled to know
something about it. The sin of taking a frog from the garden and putting it
into a bowl of wholesome bread-and-milk was enlarged on at great length, but
the fact that stood out clearest in the whole affair, as it presented itself
to the mind of Nicholas, was that the older, wiser, and better people had
been proved to be profoundly in error in matters about which they had
expressed the utmost assurance.

     -- H. H. Munro (Saki), in: The Best of Saki, Pan Books, London 1976