For a scant handful of seconds, Karkat thought about absconding straight through the middle curtain and the fenestrated wall portal hidden behind it, up to Nepeta's cave. But then the tension gives, with Autor's name, and he can breathe again.

Karkat's fangs clamp down on his own black lip, and he growls quietly as he steps forward and briskly shakes Autor's hand, eyes locked (upward) at the other boy. A hearty handshake isn't a traditional black gesture, but Karkat can be multicultural, too. And that smirk is... the smirk deserves something.

He's seen plenty of movies, he knows how it's done; one brisk pump and he stalks away back towards the movie before he can fuck things up.