The Cantankerous Crazy Old Man with a Message

Stooped over. Slow. Annoying. Loud. Probably uneducated. The accent of all accents. Brooklyn, New York, accent. Crazy, or that's how he came across anyway. And cantankerous. And I've never used the word cantankerous in my life. It's probably the first time I've ever spelled it. But I can't think of a better word to describe the muttering-under-his breath, complaining, complaining, complaining, shuffling along old guy who used to deliver the mail years ago where I worked at a financial newspap...