>>37650670They're both memes, but fundamentally different. Shaggy gets his power from memes. Without memes, he's a lanky wimp who is the butt of every joke. WITH memes, he can kill gods without breaking a sweat. Rayquaza doesn't get strength from memes, all it gets is the ability to say 'fug'. It doesn't even stand a chance. You need to use a meme with that same power.
Therefore, there's only one way to truly beat Shaggy.
Hit 'em with a Splash attack.