Derek: So we're kissing but we're not dating?
Meredith: I knew that was going to come up.
Derek: Don't get me wrong: I like the kissing. I'm all for the kissing. More kissing, I say.
Meredith: I have no idea what that was about.
Derek: Is it going to happen again? Because if it is I'm gonna need to bring breath mints. (he lowers his voice) Put a condom in my wallet.
Meredith (whispers back): Shut up now.