Mew Glitch

The Mew Glitch
The Mew Glitch is a glitch in the Pokemon Game Blue Version. It involves you avoiding the trainer located in the red circle on the picture.

Then, when you get HM Fly, you have to have avoided the Gambler closest to Saffron. Step down at him, so he appears on screen. While Ash is moving, press start and fly to Cerulean City. Then, battle the trainer you avoided earlier. WARNING: DO NOT go right in front of him. If you do so, the game will freeze. Then, when you defeat him, fly to Lavender Town. Go onto Route 8 again, and the start menu will pop up. Press 'B' to get out of it, and hey presto! You're in a battle with a level seven Mew. It's really that simple!