Talk to a surfer who surfs big waves and they will tell you how life changing a two wave hold-down is. Gerard Butler just suffered his first while filming scenes for his new movie and was rushed to the hospital, but he will be fine. A two wave hold-down is exactly what you think it is. You get pulled under by one wave and can't make it back to the surface by the time the next wave comes through. You think to yourself that you will never breathe again and are going to die right there.