sprite1 = new FlxSprite(0, 0, "assets/images/test.png");
sprite2 = new FlxSprite(0, 0, "assets/images/test.png");
// uses same image as sprite1
sprite1.stamp(new FlxSprite(0, 0, "assets/images/stamp.png"), 0, 0); // only sprite1 will be affected on Flash target, but both sprite1 and sprite2 will be stamped on Windows target