Penny: Hang on, why is it crazy to say I might not want kids?
Bernadette: Oh, it's not crazy. It's just wrong. You only think you don't want kids, but once you have kids, you'll realize that you did want them.
Penny: Or I don't want them, so I won't have them, so back off.
Bernadette: Aw, you sound just like me before I became a mom and learned what the meaning of love was.
Penny: Wow, I cannot believe how condescending you're being.
Bernadette: Look, I know it's scary, but you're gonna be a great mom.
Penny: I know I'd be great, but the point is I don't want to be one.
Bernadette: Maybe you wouldn't be great. You kind of got a temper.