I bet he is like

Karkat: GET YOUR FUCKING HUMAN BULGE OUT OF MY FACE YOU SHADE WEARING PRICK

Dave: I can't exactly MOVE on this skate board right?

Karkat: JUST MOVE IT

Dave: Hey, this is my dope ass skate board I'm not getting off of it

Karkat: I DON'T FUCKING CARE, YOU CAN FLY FUCKASS NOW GET OFF

*shoves Dave off*