asymptomatic asymptote
Refers to being in quarantine or self-isolation for an indefinite period of time, and the resulting paranoia and pessimism. Similar to a "Debbie Downer", "Negative Nancy", etc.
Person one: "Is this gonna be forever?"
Person two: "Oh, hush. Quit being such an asymptomatic asymptote."
Person two: "Oh, hush. Quit being such an asymptomatic asymptote."