The red irises set in those jaundiced alien eyes roll straight up at the ceiling as he tutts. Or one might think that's what it is. It's certainly a weird alien noise coming from that weird alien!

"Humans don't just grow gills," he argues. "And I don't know if I'm sold on a healing ability changing a human to the point of having an aquatic respiratory system. I'm telling you, it's obviously Giles' pitiful, grief-stricken fantasy!"