Grey's Anatomy, Season 7

Mark:
What did Arizona say?

Callie:
Well, she said she's in.

Mark:
Well, that's good, right?

Callie:
Eh, I'm still hedging my bets. I'm not gonna move back in with her until I know for sure she's not gonnna bail again.

Lexie:
[walks up] Hey, you got dinner plans tonight?

Mark:
No.

Lexie:
I'm cooking for you tonight, your place. I rocked the lab coli. [kisses him and walks off]

Callie:
So when you gonna tell her?

Mark:
Not until after my home cooked meal.

Callie:
Mark, you do not have to do this. I'm giving you a get out of jail free card, no hard feelings, you can be the cool uncle that hangs out on Sundays.

Mark:
I'm not the cool uncle. I'm the dad.

Callie:
You love Lexie. And the last time a Sloan kid appeared in Seattle she dumped you. Now, if you were the cool uncle...

Mark:
I'm not the cool uncle! Don't ever say that again. This is my kid. I want this kid. [mutters] Cool uncle.

Callie:
Well, so then tell her. Do not wait until this kid comes out looking all Sloan-y.