Penny: You know, if anything, he's turning me into his mother. Before I did pharmaceutical sales, I was an actress. You know, I was pretty good. You know, girl-next-door type, but hot. Doable.
Dr. Gallo: Hmm.
Penny: And not only am I Leonard's mother, but we have this man-child living with us named Sheldon.
Dr. Gallo: Oh, Leonard talked a lot about him. I wasn't sure if he was real.
Penny: Yeah, he's as real as the fine I get when I use too much toilet paper.