There's a new teaser poster out for Piranha 3DD:
...yep, they went there. If you think the first modern update on Piranha went a little too heavy on the sexy bikini women, the sequel actually went ahead and made the title itself a thinly veiled gag about the female breasts.
Piranha 3DD's story basically revolves around the grand opening of a summer location called The Big Wet Water Park, which is aimed towards young teens, and the owner's plan is to attract said demographic by hiring moonlighting strippers as lifeguards. And that pretty much sets up the entire movie - lots of nubile young people wearing almost nothing, to be eaten by vicious schools of fish that are portrayed more savagely than they are in real life.
The film also has a David Hasslehoff cameo, if that's the kind of thing that gets you buying a ticket.