Amy: I remember when we signed our first relationship agreement.
Sheldon: You seem to be forgetting the no nostalgia clause.

I'd pull this car over and kick you out, but if Penny dumps me, you're all I got.

Leonard

Sheldon: At our age, why don't we call it man's night?
Leonard: Because we just spent all our allowance on comic books.

Pink wine and pizza bagels? It's like 8th grade all over again.

Penny