 Also, in the opening sequence of "", a yell of "Disgruntled postal workers" is heard, followed by the arrival of postal workers with machine guns.In an episode of "Seinfeld", the mailman character, Newman, explained in a dramatic monologue that postal workers "go crazy and kill everyone" because the mail never stops.In "The Simpsons" episode "Sunday, Cruddy Sunday," Nelson Muntz asks Postmaster Bill if he has "ever gone on a killing spree"; Bill replies, "The day of the gun-toting, disgruntled postman shooting up the place went out with the Macarena".