Quote from The Big Bang Theory 10x05 Sheldon Cooper: When I opened the door, I saw my father having relations with another woman. Penny Hofstadter: Oh, that's awful! Sheldon Cooper: I know. It's also why I never open a door without knocking three times. I mean, the first one's traditional, but two and three are for people to get their pants on.
15 Best The Big Bang Theory Quotes from 'The Birthday Synchronicity' (10x11
Quote from The Big Bang Theory 10x11 │ Amy Farrah Fowler: I thought I’d let Harry Potter make things hotter. Sheldon Cooper: Wowza. Amy Farrah Fowler: I got a Gryffindor robe for you. Sheldon Cooper: Oh… A Gryffindor sleeping with a Hufflepuff? How scandalous.
14 Best The Big Bang Theory Quotes from 'The Allowance Evaporation' (10x16
Quote from The Big Bang Theory 10x16 │ Sheldon Cooper: Two years ago… I got my driver’s license. Amy Farrah Fowler: What?! Why didn’t you say anything?! Sheldon Cooper: I like being chauffeured around. It makes me feel important.