Complete the "Canonized" and "Back To Basics" missions, then go outside the Sloppy Seconds clothing store in the Saint's Row district. Dial #74672263 into your cell phone to unlock the Pimpcane shotgun, then activate that cheat. Equip the Pimpcane and wait until it is midnight in the game. Enter the back door of Sloppy Seconds, then go to safe and start unlocking it. A safe code will appear. Enter the safe code backwards, from right to left, starting with "A". When rotating the Analog-stick, do not let it return to the center before starting the next rotation. Cancel out of the safe opening by tapping D-pad Down(2). Then, walk out the back of the store.