My ILL clerk is perpetually bugged by my cataloger, because they share space in my Lending Library office and the cataloger’s wit is quick & nasty. 

Whenever the cataloger slings one his way, the ILL clerk says “Keep talking, I hope you live to be 100!  Live forever!” 

They’re both lifers.  So the one is wishing immortality on the other.  He’s saying, “I hope you suffer in prison for eternity!” 

It’s the only place on the Earth where you can wish someone long life and have it be a curse.