[Oh god, don't invite him to get all friendly, Marty, He steps up and ribs (the guy he thinks is) his friend playfully.]

Are you kidding me, man? Of course I was! I thought death horse must've got you. But you're better than that. And now all we've gotta deal with is the magic rock thing.

[Or so he thinks. He's all smiles now, but that won't last long.]