What's the pokey? Is that valley girl slang?

Visiting all the Springfields is an awesome task and one that I fear to be out of my reach this time. And since my only reason to want to was so that I could confidently brag to my friends that I had visited the Simpsons' town, there's no point in going to any of them if I don't go to all of them. I guess I'll save that pilgrimage for my next mid-life crisis.

Marion