If you've ever wondered, "Hey, what would my Grandpa wear if he was going to this Halloween rave?" that's weird, why did you think that. Fortunately, you aren't the only weird person on Earth and the Internet is full of funny old people Halloween costumes. These old people are living the high life. Trick? Treat? These Halloween costumes for the senior citizen set are a little bit of both. Whether they're wearing something frighteningly revealing (Halloween is about scares, after all!) or they're living out lifelong fantasies (it's never too late to Superman!), each of these ridiculously cute old people are hands down Halloween winners.