Have you ever watched a YouTube video and the person is telling you what to do but its all fake? i do, i fell for it in many of MunchingOrange's Videos and TyranitarTube's. No matter how many times i tried to ring the bell 3 times on Celestial Tower to summon Rayquaza it just didn't work. Now I've heard that this ones a fake so I've never fallen for it but, no, you will not get a Mew if you move the truck near the S.S Anne. Then there's the special way to get to the secret place which is supposedly from HeartGold/Gold and SoulSilver/Silver to get both Ho-Oh and Lugia in Emerald (Ruby, Sapphire I don't know but I'm pretty sure Emerald). To do that, you have to travel around the region only doing certain things, "Exit this house on this side of the door cause that side messes it all up." If you've ever run into any of these things that i didn't mention here (I didn't mention much so there's bound to be some aha) please, post them in the comments and lets all have a friendly chat!