To begin, you will need a pair of jeans, a cheese grater, a book, and sandpaper. Vigorously rub the sandpaper across the jeans where you want to rip them. Slide the book down the pant leg until it's between the fabrics of where you're working. Continue to sand like crazy. Then take your cheese grater and do the same thing that you did with the sandpaper. You will notice a lot of fading and a small hole will begin to emerge. Use your fingers to tear at the hole until it is the desired size. Then sand the edges.