Leonard: How is it my fault?
Penny: You have destroyed my ability to tolerate idiots! Now come with me!
Leonard: Where are we going?
Penny: We're going to have sex!
Leonard: Wha, I mean, ok
Sheldon: What's going on?
Penny: Put on your noise cancelling headphones, 'cuz it's gonna get loud!
Sheldon: Oh not this again!