This cheat is simple. Stand at the right side of the sign of the Battle Tent in Verdanturf Town, get out a Mach Bike and petal to the right until you hit a rock in Route 118 (The beach near Mauville city), this is the longest area in the game without a person or something bumping into you. Then ride back to Verdanturf's Battle Tent's sign. Keep on going back and forth again and again. Normaly, this take a long time for the egg to hatch. But making the game as loud as you can and watching TV while doing this will make it faster! (You must have the volume at least loud enough for you to hear whenever you bump into something.) When your show or whatever get's to commercial, you will see some results! The egg will at least say "It moves occationaly", if not, just keep on doing this. This cheat works 100%!