[At least neither of them are about to fall to their deaths because that would be unfortunate with sweat-slippery hands. Ken holds them anyway.]

I already accidentally made a deal with him. How worse can it get? I'm a fighter, Dipper. There's nothing else I can do. If I can't fight for the people most important to me, what's the point? I'm not going to just sit back and let him do what he wants to you.