There is nothing quite like growing up with sisters, especially when your entire lives are spent feuding with them, and constantly trying to one up each other. This is an example of how brutal those relationships can get.

Luckily my sister and I have never gotten to this point. When one guy was tattled on by his sister for hiding a 12 pack of beer in his room and grounded by his parents for three months, he decided he’d soothe his wounds by taking revenge on his sibling. After rummaging around in his sister Katie’s room, Chris, whose surname is not known, unearthed a “hook-up” list, which outlined her sexual conquests, complete with who she had her sights set on next.

That is one ice-cold dish of revenge.