Sheldon announces he’s starting a new science project: . He’s ordered a tapeworm egg kit from a biological supply company. Mary nearly chokes on her coffee.
“Did you know that 87% of people don’t wash their hands properly after using the bathroom? That means every doorknob in this house is essentially a petri dish of fecal bacteria.”
Sheldon storms off to his room. But later, he knocks on Missy’s door (three times, of course).
He leaves. Mary and George stare at each other.