Dammit, one commenter started out well:

"i hardly see how speaking in a retarded voice could effect the clouds in any way."

Okay, zero points for punctuation and misusing "effect," but that's okay, they're one of the few expressing a healthy dose of skepticism about how ludicrous--

"its the consciousness that is interacting with it, so i believe he would have probably had the same effect if he had said it in his mind, in lower or higher pitches not limited by vocal ability to reach a higher or lower pitch."

Fuck you, human race. You need to be debugged.

It totally works and is scientific.

The trick is you have to sound like Lumpy Space Princess. The clouds respond the that.

On the contrary, I'd say he'd not only take credit for it, but he'd say his powers of cleeewd manipulation had grown even more powerful, allowing for multiple cleeewd psycotikenisis.