Michael had been about to malign the fact that he'd agreed to tutor an idiot, so he's glad that Caleb made it clear that it's a joke. When he gets to the truck, he uses his powers to make sure the blanket over the back hides his bag of clothes and sleeping bag, patting the roof as he gestures for Caleb to get in.

"I mean, if you were, I was gonna start charging double," is all he says, a deadpanned guarantee. "Burgers and dessert."