That's a new kind of duel, then. It must be part of the culture where you come from?

[Riding Duels are totally cultural milestones, it's fine. At least with that sort of terminology he can kind of get the idea that they're... talking about races? So maybe Yusei is just the type to favor unusual terminology for things.

It's not like Jean has room to call anyone else eccentric, but y'know. Decks. Right.]

Along with decks.