Kurt laughed too - it seemed to relax him a little bit, because it was so genuine. "I think you should stick with Kurt too," he agreed. "My codename is Nightcrawler though. It was also the name I had in the circus." And when he had originally moved to the States and needed a codename at the Institute (of course the students chose their own), he just couldn't see himself giving that one up.
"Are you going to ask the Professor for sure if...I am your son?" he inquired. "Although I don't even need any more confirmation now, really." When the initial shock and fear had worn off, the truth seemed to reveal itself anyway.