Natasha, sitting on Bucky's bed, on the phone, looking through a box full of aged letters: Okay, I've got a box but there's no key in here, just letters.
Bucky, on the other end of the line: That's the wrong box, put it back
Natasha, smiling, knowing she's struck gold: Oh, Bucky, are these letters from Steve?
Bucky, mildly panicking: Don't read those letters.
Natasha, big grin on her face: oh look, he calls you "moon pie", that is so cute.
Bucky, mortified, panicking: PUT DOWN THE LETTERS
Sam, taking the phone from Bucky: Hey Natasha, it's Sam
Natasha, smirking: Hey Sam, how's the train ride
Sam, enjoying Bucky's panicked face but knowing he should be the bigger person here: Delightful. Listen, I don't know what you're doing right now, but there are little bubbles forming in the corner of Bucky's mouth.
Natasha, slightly remorseful: Okay, yeah, I kinda crossed a line. Put him back on.
Sam, relieved that went well: Thank you.
Bucky, thinking everything is settled: I'm back.
Natasha, full smile: What up, moon pie?