Tie or tape yourself to a chair, you can do this by starting at your ankles, then thighs, stomache and so on. work your way from the bottom up. Now fasion some type of cuff to keep your wrists attached to eachother behind your back. before you tie your hands, turn on a rather long porn video of your choosing. Once you are able to free your hands, you may masterbate however you choose. Then you can free yourself from the chair