Clearly I have to 'dare' you, too.

Walk like a dog.

Jack looks hard at his other self.
    “Well, technically you don’t have to— I-I mean—” Shit, He is in trouble. Of all the things to—
He sighs hard, making a loud frustrated noise as he puts his hands over his face.
    “Okay, okay!!” The last dare he tried to skip out on almost got him in some very hot water involving a lemon shoved into inappropriate places. He doesn’t want to even begin to imagine what kind of penalty game his future counterpart would come up with.

He sinks to sit on his heels and looks up at the other man with a scowl that’s way too much of a pout for his own liking. He clenches his teeth and scoots his knees across the floor until he’s more or less crawling towards the other. (It’s more of a sad slinking, really, also no he’s not blushing, shutthehellup).
    “There, you happy now? Also I swear to god if you try and ‘pet’ me I’m going to bite your damn fingers off.”