That movie was so much shittier than I expected, and it's not like one's expectations are exactly high when a movie is called Sharknado.
For a movie based entirely around the idea of sharks and tornadoes, they didn't seem to have the slightest clue about how either of those things work. That giant shark at the end. WTFF?
Everything was awful, from the obvious character cliches and plots you could see coming a mile off, to things exploding that shouldn't explode, to the shocking continuity of shots, and stock footage that didn't match the scene.
Today would be a good day to rewatch Weekend at Bernie's 2, because it's going to seem like LOTR compared to this.