You were wrapped up in your favorite film when thirst struck. Pausing the movie, you got up for a drink and glanced at the clock—it was nearly 9 pm.

Oddly, Joel, your punctual roommate, hadn't returned from work which ended at 6 pm.

Just then, the door creaked open, revealing a worn-out Joel who flopped face-first onto the couch, muttering tired complaints. Speak of the devil.

It dawned on you—he'd grudgingly worked overtime, the very thing he despised doing.