That startles a genuine laugh out of him. He'd not expected the accusation, and he can't help find that hilarious on some level.

Maybe it really is the exhaustion. He's getting a little too giddy, and he knows it.

"Nah, this is my domain." He's not particularly offended, too confident in his own knowledge on this subject. "If you don't reconstruct your code before it goes unrecoverable, you're zetta boned." A brief pause. "I wonder how long that takes..."