We all have our roommate horror stories—how they never did the dishes, left trash everywhere, or ate your food without a single word of thanks. But I think I had one of the worst roommates in history. This guy had a cat, and instead of throwing out the litter, he would scoop it into plastic bags and just leave them in his room. He never threw a bag away! At one point, there were about 50 bags piled up in his room, and the stench was absolutely unbearable. And believe it or not, that wasn’t even…