Guy 2: "zOMG, DAT IS THE PLAGUE!111! WANNA BE BFFL M8!!?"
Guy 1: "FU bish"
in a modern vernacular context, the plague refers to someone being out with illness, most often a chest cold or flu, usually exaggerating the extent of one's illness while demonstrating their incapacity
Okay then send her my condolences and tell her to get better soon!
The Bubonic plague, otherwise simply called the "plague", killed millions of people in medieval Europe