[Go ahead. Shaw will love to see you try. It'd make his day, really. All it takes is one exception. And it'll seem small and inconsequential at the time. Exceptions always do.]

And the same compliment in return, professor. I am appreciative of what you can do, but I can see you're intent on splitting semantic hairs. Let me assure you though that whatever my reasoning, the serum is not intended to be permanent. However, considering that you are the one and only test subject for its effects, said effects may be... [a dismissive gesture] a tad unpredictable.

[He offers another viper's smile and circles around the cell.] I thought you might like to know how Magneto's doing. Or Beast, Banshee, perhaps Mystique? She is your sister, yes? She was quite concerned about you this morning.