He laughs. "Nah. You're just pitifully under-socialised. There's plenty of people around here who aren't even from Earth. Me included, strictly speaking."

Moving swiftly on... "You're from the nineties, right?"

He considers. "Mark Cohen was from the nineties, and American to boot - but I haven't seen him about for a long time. So was April - I think she was from his world, actually. There's Jack Harkness, maybe - he time-travelled, I'm not sure when he usually came in from - but he hasn't been around for over a year, maybe more. You're right, the nineties are woefully under-represented. Plenty of people not from the early twenty-first century, though."