Leonard: Does this sound familiar? I'd love to go shoe shopping with you. Hiking? It's great. It's two a.m., of course I want to go to Korea Town and sing karaoke with your friends. Who wouldn't?
Penny: Okay, we were going out. You were going to get sex anyway.
Leonard: Really? You would have slept with me after a three-hour documentary on dams?
Penny: No. No woman would.