This time out, those flesh-eating fish somehow made their way to a popular summer attraction called the Big Wet Water Park.
The film's director arrived to its Hollywood premiere on Tuesday night with a piranha pillow. Co-star David Koechner came with a promise for ticket buyers.
"Yes, they'll see bare breasts, if they're so inclined ... as implied by the title - so subtly," Koechner said.
And don't forget David Hasselhoff. He's in the picture, too, along with Ving Rhames.
"Piranha 3DD" is rated "R." It opens in theaters and On Demand on Friday.
If you see the film, look for a Hasselhoff music video at the end.