Big Bang Theory Quote
(Sheldon has accidentally drunk out of Leonard's water glass)
Sheldon: The backwash into this glass is every pathogen that calls your mouth "home sweet home." Not to mention the visitors who arrive on the dancing tongue of your subtropical girlfriend.
Raj: Hey! That's my sister and my country you're talking about! Leonard may have defiled one, but I won't have you talking smack about the other!
Bernadette: You guys ready to order?
Sheldon: Yes. I'd like a seven-day course of penicillin, some syrup of ipecac to induce vomiting, and a mint.
Bernadette: I don't understand.
Howard: He drank from Leonard's glass.
Sheldon: "He drank from Leonard's glass." Words they'll be carving into my tombstone.
Quote from S04E23 - The Engagement Reaction