Now, did Pikachu come up with it, or is Pikachu all Pikachu can say and when Pikachu said 'Pikachu' he was actually saying 'Jimmy' but everyone heard 'Pikachu' so they rolled with Pikachu?

I'll stop.

"Yeah, I'll be around. Not like there's a lot of places to go on this planet, anyway. Think I'm gonna go try to find something that doesn't taste like peanuts."