She smiled as if Regapisk had made a clever joke.

Everyone laughed, as though he'd made a clever joke.

And he laughed, as if he'd been telling a clever joke.

Finally, I find a clever joke from the disillusioned left.

Is the missing image some sort of clever inside joke that I am missing out on?

They looked at him as if they were hiding some clever, subtle, private joke.

But Weyoun shook his finger as if he'd just heard a clever joke.

He did not appear to be making what would have been an incredibly clever joke.

I suppose this was his idea of a clever joke, because after he'd said it he laughed out loud.

Or is this come copy editor's clever "Whose on first" joke?