In the vernacular, a term used to describe various ethnic groups who regularly book snorkeling trips when they can't even swim. Said groups subsequently spend the entire trip sea sick and do not tip at the end of the trip.
NSV (Non Swimming Variety) 1: We should go snorkeling!
NSV (Non Swimming Variety) 2: Dude, we can't even swim!
NSV (Non Swimming Variety) 1: So! We are on vacation, what is the worst thing that can happen!