Even if Katara knows she's being teased, she's apparently going along with it. That's good enough for Jamie, and that crooked grin of his appears. "Who says I have a swelled head?"

He sobers up quickly enough, however. "Och, Katara, I don't get it either. All I know is what I mentioned before." He shrugs. "Ye could try asking them, but I'm not sure they'd give ye any more of an answer than the one Doctor gave me."

It's much easier for him to accept that it just is. Things like, oh, it might be because they're two different Doctors from two different universes and not his Doctor at all? They haven't occurred to him.

What does occur to him, however, is that there's something else Katara mentioned earlier that he was considering trying - aside from the dancing. And since he really can't answer the other questions, maybe now is as good of a time as any to bring that up. It just involves a wee change of subject.

"Oh - while I'm here, I should maybe look for a swimsuit. I don't suppose the kilt would work well for that, aye?"