Halloween is one of those occasions that can go so very right or so very wrong. While we all hope to win best costume or show up to work hangover-free, one wrong turn and the night can end in a real-life nightmare. And when you're single, that's even truer. There's the potential of running into your ex, having the lamest sexy costume ever, or throwing a party where nobody shows. But the good news is you can always grab the closest mask and hide behind it. Ahead, check out the worst-case scenarios (in GIFs!) that we wouldn't wish on our worst enemy.