[There's a smile at that, probably one of the more genuine ones Dipper's seen on his face before. This whole thing's apparently been pretty good for his mood over the last couple of days.]

You've got this. Just...stop thinking about it so much. I know that's hard but it's okay. [While it sounds a little sarcastic, he's being serious. He knows it's hard for guys like him and Dipper to stop thinking and planning but if he can do it, so can Dipper.] And maybe consider drinking some other punch? Dude, you're making my eyes water.