[He laughs out loud at the tights comment, delighted by the flirting, but sobers abruptly at Kirk's reaction to the sex bands stuff. His movement finally slows to a complete halt, because this is a conversation that's too serious - and potentially devastating, if Kirk is as much like him as he seems to be - to have whilst dancing. He draws the younger man to the side, his gaze sympathetic.]
I'm sorry. I'm really sorry. You can't have sex here without a sex band. And you can't have casual sex with penetration. A red band means you can get it on with as many people as you like, but only as far as third base. If you want to actually fuck someone, you need a blue band, but then you're effectively restricted to that person and up to one other.
[He quirks a rueful smile.] You're pretty lucky you haven't got into trouble already. I got black-banded my first day here!