Uh huh. I'm glad your sense of humor hasn't changed.

[but hah, Zack is already winning. Maybe not at figuring out how to get this thing off, but that's just a minor detail. A little fun won't hurt at all, and when it comes to things like this or, at least, things he puts his mind to, he has a surprising amount of patience]

I know exactly what "constitutes a treat", thank you. [he even does the air quotes with his free hand] And this counts. Or it will count eventually! Besides, we'll probably have this figured out before you realize you're having fun.