Big Bang Theory Quote
Amy: Once in a while, I get a little jealous of how close Penny and Sheldon are... I mean, not in a romantic way. It's just, she really has some sort of connection with him.
Leonard: Well... Well, they've known each other a long time, and Penny grew up around horses, so she knows how to approach him without making him skittish.
Quote from S07E21 - The Anything Can Happen Recurrence