In America, conversation is a game played with rules differing from England’s. It is not tennis, in which you return the other fellow’s service, but golf, in which you go on hitting your own ball. It might be defined as a tyranny of anecdote, tempered by interruption.
quoted in Reader’s Digest, April 1935
This does sound rather like sour grapes, almost as if Mr Mortimer encountered someone who was not prepared to let him have the conversation all his own way :>)