Leonard: Making pretty good time, huh?
Sheldon: Is that really what you want to talk about, Leonard?
Sheldon: What do you want to talk about?
Leonard: Please don't tell anyone I spent the night with Raj's sister.
Sheldon: There it is. What if someone asks?
Leonard: No-one's going to ask if I spent the night with Raj's sister.
Sheldon: Perhaps. But they might ask me something else.
Leonard: Like what?
Sheldon: Like, has Leonard betrayed any of his friends recently?