Weight gain as a result of being forced to shelter at home during a pandemic, specifically due to Coronavirus, or COVID-19, but can be applied to other pandemics. Total gain does not have to be limited to 15 pounds.
Friend: I can no longer fit into my jeans.
Me: Oh man, you got the Corona 15 bad. You need to hit the gym. Too bad they are all closed!
When person self quarantining for Corona Virus (usually a female) eats a ton, and precedes to sit on her ass and gain 15 lbs.
Did you see Suzy after quarantine? Talk about a Corona 15!