Piranhaconda (2012)

While shooting a low-budget monster movie entitled "Head Chopper 3" in Hawaii, a film crew is terrorized by the titular creatures. These giant snakes are the result of an unholy union between a piranha and an anaconda.

A film crew shooting a B-Movie in the jungle comes face-to-face with a fearsome pair of piranhacondas, which resemble giant snakes with piranha teeth. To reach the requisite running time, a team of mercenaries is thrown into the mix, as well as a scientist eager to carry one of the creatures' eggs back to civilization.

I'm always at a loss when one of the first things critics attack when they haven't enjoyed a B-movie is the cgi. I guess that's vogue and safe for critics.