How could you possibly make sexy girls sexier? Just add water. Whether it’s a wet t-shirt contest, running through a sprinkler, emerging from the pool, or trying not to lose their suit during a gnarly slip-and-slide, hot chicks and water just go well together. While the aforementioned slip and slide has its perks, the water slide is where it’s at. It’s a slip and slide on steroids. You want a day filled with screaming, giggling, and loss of bikini tops? Park your lawn chair at the bottom and enjoy the show. With summer coming to a close, this could be your last chance. If you can’t make it, check out our gallery below.