Just add another one to the list. Not only do we have planking, owling, and sloppy tuna-ing, but now "leisure diving" has been added to the lineup. Brian Thorne, Harvard Business School grad and co-founder of Leisuredive.com, explained to the Boston Herald, “Planking and owling lack a coolness factor. The idea, pictures and backgrounds of leisure diving just screams summer fun." Ya it does. And where did it all start? Right here in the Hamptons! [Photo via]