There are a lot of options when it comes to picking your Halloween costume. There are those who like to be trendy, so they pick a pop culture Halloween costume that personifies something that happened this year. Others like to travel back in time and dress as their favorite nostalgic characters from the '90s. And still others just want to dress up as Beyoncé. But what about the scary side of Halloween? Think of these as ways to freak out your friends.