Piranha (1978)

The first scene in Roger Corman's 1978 Jaws-splotation flick 'Piranha' features a couple of teenagers going skinny dipping and being eating by the titular carnivores fish. I mean how could the first scene in this movie be anything else? Turns out these are genetically altered piranha who can survive in cold water, part of "Operation Razorteeth" and they get lose in a lake, a lake that has both a summer camp and a resort on it. The movie has a good sense of humor about its self and thus is fun and better then it deserves to be. **1/2