"Oh, they don’t always get to ride the roller coaster. Sometimes they only get to spin the teacups"

One of my favourite Big Bang Theory lines, in context...

Mrs Cooper: I hear that Leonard has a new girlfriend. How are you doing with all that?

Penny: Oh, fine. You know, it’s been a while. I’m getting back out there.

Mrs Cooper: Let me ask you, when you get back out there, are you wearing this? (Holds up a skimpy top)

Penny: Well, it’s super cute on. That top has paid for itself in free drinks like ten times what it cost.

Sheldon: Yes, Penny has a lot of her money tied up in promiscuity futures.

Mrs Cooper: Hon, you think maybe the reason why you’re having trouble finding a guy to settle down with is because you’re letting them ride the roller coaster without buying a ticket?

Penny: Oh, they don’t always get to ride the roller coaster. Sometimes they only get to spin the teacups. Now I’m going out tonight. Would it be crazy to ask you to look at the outfit I’m going to wear?

Mrs Cooper: Oh, not crazy at all. And don’t beat yourself up. When I was your age, you could have me for a car ride and a bottle of strawberry wine.