This is genius. One guy shared the way they got back at a thieving roommate — and their methods are certainly food for thought. Roommate relationships can make or break your living situation. If you decide to live with someone responsible and clean, you'll probably get along just fine. But of course, you don't really know what it's like to live with someone until the moving vans are pulling away from your house, and your roommate is setting the stove on fire with their dinner. You just have to…