Nope. He's definitely flushed, or at least sick. This guy with a punk attitude reminds him of the highschoolers that liked to perch around the diner and skip school. The anger and rebellious attitude is cute, but aimed at the wrong person.

"That why you're hiding yours behind sunglasses?" He's not trying to purposely antagonize the kid, it's more for the tit-for-tat dialog they seemed to have established. That, and he saw the way the kid squinted in the beginning.

"I'm assuming you're a prisoner here, too."