Sheldon: (sees Priya with Leonard in the shower) What are you doing in there?! (to Leonard) She can't be in here!
Leonard: We're in here first. You can't be in here!
Sheldon: According to the Roommate Agreement--Paragraph 9, Sub-section B, the right to bathroom privacy is suspended in the event of force majeure. And believe me—I'm experiencing a very "majeure force"!