Mitty is very much a Thurber protagonist, so much so that he has been called "the archetype for dreamy, hapless, Thurber Man" [REF].
Thurber's love of wordplay can be seen in his coining of several nonsense terms in the story, including the pseudo-medical jargon "obstreosis of the ductal tract", "streptothricosis", and the recurring onomatopoeia of "ta-pocketa-pocketa-pocketa."