Receiver: *pokes Black's cheek* Poke!

Black: Hm? What are you doing?

Receiver: Just poking your cheek.

Black: Why?

Receiver: Cause it's fun! Poke! *Pokes his cheek again*

Black: Oh, well in that case.... poke! *Pokes her cheek back*

Receiver: You wanna turn this into a poke war? Cause you'll lose if you do! *Pokes him again*

Black: *pokes back*

The two of them then had a poke war, poking each other back and forth until the other got annoyed and walked away, having lost the poke war.