Shark Camp.

Sharknado 2013 was a viral moment in time fuelled by social media. A camp movie that knows that it is camp and that moves it from the so bad it’s good category to just plain bad. Having said that it’s worth watching for the chainsaw culling (even that's not original, see Malibu Shark Attack from 2009). It spawned 5 sequels but added nothing really to the initial idea and the moment had definitely passed. If you must watch at least one Sharknado movie, The Fourth Awakens is my favourite but in time I will struggle to tell you why.