Sheldon and Amy do a scientific evaluation when she gets turned on by Zach. They determine that she's horny. He wants her to go out with Zach, but instead she tries a hand-holding experiment with Sheldon.
James Earl Jones: Why don't you and your friends come to Comic-Con with me? Sheldon: Really? James Earl Jones: Of course. And San Diego is right across the border from my favorite city on Earth, Tijuana.... where I'm taking you every night! Sheldon: Ay-yi-yi. James Earl Jones: Ay-yi-yi. Bang. Bang.