"Tech stuff. Disruptor. And the--" He stops suddenly and looks up, as if just now realising what he's talking about. Perhaps he shouldn't get this relaxed.

"Anyway, I grew up with the show. Here.." He props one ankle on his knee, pulling up his trousers a little, revealing a little tattoo saying 'NCC1701' in plain writing. "It's the registry number of the ship," he explains.