[The tragedy for Chuuya is that even if bunnies purred, he wouldn't be embarrassed about it...]

I can do both at the same time!

[He's absolutely doing both at the same time, still petting those ears even as his own swivel and twitch under Chuuya's hands.]

Another way of nicknaming! Taking part of the name or the full given name if it's short enough, adding "A" to the front.