Unforgivable flaw in a shark movie (opens in new tab)

I've got no problem with bad movies. I love a bad movie. Some of my favourite films are bad movies. I love a and recently I've been watching some bad shark movies. I make a highly personal distinction between films and movies. Sharknado might be objectively the worst film I've ever watched but damn if I wasn't absolutely enthralled all the way through. I was vibrating with delight. Hooting. Any amount of implausibility, any terrible acting, bad scripts, janky cgi, I can take it. I just want t...