"Oh man, good question. Hm." She makes a show of thinking. "Roller skating," she settles on, after a moment. "They've got these special boots with wheels on them, and there's this super highly polished floor, usually a big loop. You glide along, you hold hands. It's nerdy and kind of retro by my time, but it's fun. They play music, sometimes there are lights that flash in different colors. You know, for atmosphere."