Worker learns his lesson when he finds out who the old man he has been pestering really is 

Just a janitor

Jeffrey’s colleague got very mad at him. “How can you treat an elderly man like this!?”, he shouted. Jeffrey shrugged and put it down to him being “just a janitor”. Jeffrey’s colleague couldn’t believe his ears. “You don’t treat people like this, no matter their occupation! And besides… He’s not just a janitor.”

Jeffrey was completely shocked when he found out who the janitor actually was.