The Flash, Season 4

Barry:
What's up with you? All night, you seem preoccupied.

Joe:
I'm worried.

Barry:
About what?

Joe:
Being a dad again. I'm almost fifty, Barr. When I saw that video Cisco made of you and Iris when you were kids, it just... hit me like a ton of bricks. I was... I was young the first time I did this. And after seeing Joanie... [groans] It's hard raising humans, Barr.

Barry:
You'll be fine.

Joe:
I barely get enough sleep as it is, worrying about you three. Especially with Wally being gone. Add to that a crazy baby schedule. Feeding, crying. I'm honestly scared to death.

Barry:
Joe, when you raised Iris, you were alone. When you took me in, you were alone. And, you know, when Wally showed up, you were alone. You did all that by yourself, single parent. No one could've done a better job, no one. Now, you've got a partner. You've got a family. You've always been there for us when we needed you, and now it's just our turn to do that for you. We will.

Joe:
[puts his arm around Barry's shoulders] I know you will.