[youtube=http://www.youtube.com/watch?feature=player_embedded&v=iwsqFR5bh6Q] Sharks took my grandpa. So I really hate sharks. Sharknado may have had dismal TV viewer statistics, but by the explosive reaction on Twitter, you’d never know it. Somehow, this absurdly named B-movie was the best thing to post about on Thursday night. Now, the dust has settled, the air …