Adventure Time, Season 4

Finn:
Hey, Jake. What's wrong? You look dumpy. How come? I-Is it because of that metal box? [runs to Jake looking out the window] Is something sad inside?

Jake:
No... it's nothin'.

Finn:
There's lots of boxes that have nothing in them. But also, you can put something in the box. And then it won't be empty! Does that make you feel better? [Jake turns to him]

Jake:
[chuckles] You're a charmer, Finn Human. No... it's, well... Lady Rainicorn doesn't want to play the game Card Wars with me. [shows box full of cards to Finn] I always beat her. 'Cause she says "No more Card Warring."

Finn:
What's Card Wars?

Jake:
It's a fantasy card game that's super-complicated and awesome, but— well... oh, it's kinda stupid. Never mind.

Finn:
How come you never talked abut it before? It sounds cool!

Jake:
Really? Well, I thought you'd say it was for nerds who do not know how life is outside the nerd universe.

Finn:
I-It is, man. But I still totally want to play it. So no more moping, okay?

Jake:
Thanks, Finn!