Amy: Thanks for taking me out.
Penny: Well, you're spending your birthday with Sheldon. Why not celebrate early?
Bernadette: So, where do you wanna go?
Amy: I hear that new Mexican place on Green St. is good.
Penny: Sure, sure. Or, we could take you to get a bikini wax.
Amy: Why would I get a bikini wax for my birthday?
Penny: Oh, I don't know. It was just a thought.
Amy: I think I'll just stick to Mexican.