1x13 A Sneeze, Detention, and Sissy Spacek

Who would’ve thought a virus originating in China would really come kill us all :see_no_evil:

Georgie: The real genius of the family

So you telling me Sheldon was 9 years old when he first heard "Soft Kitty" and never was sick before that? That's a little hard to believe, even for a germophobe.