Here is how you handle the most common leads with Meowth.
How to handle common leads with Meowth!
Meowth: It's a Speed tie, but Fake Out first. Then, switch to something, as they will use U-turn.
Gastly: Bite. Even if it's Choice Scarfed, you have a Focus Sash.
Stunky: Fake Out, then U-turn to Croagunk unless you expect Explosion.
Voltorb: Fake Out, then switch to Misdreavus, as it will commonly Explode.
Snover: Fake Out, then U-turn to Houndour.Anorith: Switch to Gligar.