"Hey!" Jamie reaches up to try and bat away Katara's hand, not much caring for having his hair ruffled. He generally has to be asleep for him not to complain about that on some level.

"Now," he continues, once she's done, "If I'd not haven given ye a hard time on that, you'd think something was wrong."

Katara may happen to notice that he's not said anything about going after the frogs again. It's purposely done - he's still trying to think of a way he can do that in his smaller form.