Simon shook his head. "Aliens, no. There are no ... I mean, not ..." He frowned. He couldn't even call reavers aliens. Not really. They were people. Or had been, at one point. They'd gone berserk and engaged in mutilation and cannibalism, but they were still ...
"There are ... reavers. But it ... they were people once. They're not really ... aliens. And I've never heard of the Face of Boe," he said, his brow furrowing. "What ... is that, exactly?"
He had a feeling even if she did explain it would be one of the many things that was beyond his grasp just then.