Piranha 3DD  (DVD Tamil)

Maddy, a marine biology student, returns home for the summer to the waterpark she co-owns. She finds to her horror that the other co-owner, her step-father Chet, plans to add an adult-themed section to the waterpark with 'water-certified strippers', and re-open it as "Big Wet". At a party at the waterpark that night, Maddy encounters several old acquaintances, including her policeman ex-boyfriend Kyle Knight, and Barry who has secretly had a crush on her since grade school. She also runs into two of her close friends, Ashley and Shelby. Shelby and her boyfriend Josh go skinny-dipping in the lake, where a piranha makes its way inside her vagina. Meanwhile, Ashley and her boyfriend Travis make love in their van. They accidentally trip the handbrake, causing the van to roll into the lake, where they are both devoured.