I have a constantly evolving personal list of words I think should either be revived or be used more frequently (among them are hag, discombobulate, and intertriginous). On the less savory end of the spectrum is asshat, frequently used on Twitter to indicate someone who is being, well, an asshat. For some reason this word seems bandied about online a lot but never by anyone I know in real life. Imagine my glee when I produced a specipan (a white plastic tray put into the toilet to catch urine or poo; see image above) and my patient said, "Seriously? Asshats exist?"
Obviously, it was one of those moments that makes my job priceless.