"You're a mutant," Tony breathed, as though this were some obvious revelation, only to wince and offer, "Wow, sorry," because he couldn't imagine being born as a human boy and having that human boy childhood only to suddenly grow a shell. That must have been a real shock. It occurred to Tony that he should furnish the mutant with an answer eventually, and said, "You don't want to go for a swim with me? You kind of stink."