Dimension Films has unleashed its red band trailer for Piranha 3DD and you will never look at a water park the same way again. Lake Victoria was the site of the terror in Piranha 3D and now those ferocious fish are wreaking havoc at the Big Wet Water Park. Back to reprise their roles from the first film are Christopher Lloyd and Ving Rhames. Joining the franchise is David Hasselhoff, who portrays a celebrity lifeguard (a stretch for the former Baywatch star?), Katrina Bowden (30 Rock) and David Koechner (Anchorman). Look for the water-born thrills to arrive in theaters June 1. Warning: The following trailer is NSFW.