After seeing Red, the new action comedy based on the comic book series of the same name, I just have six words on the tip of my tongue: Helen Mirren is one hot grandma. I know people who are 65 years old, just like Mirren, who look like they’re already have one foot in their casket, whereas Mirren could don a bikini and turn heads at the beach. But let’s be honest, Helen Mirren isn’t just a pretty face and …