Valley
There's a hat decorated with fins and (presumably fish) mouths on it. Who wears strange hats like this? Turns out, the valley people are the ones who wear these. I'm talking about the "Valley Girls" of California, Hollywood / LA. They're into the crazy fashion, and they'll wear anything if it's deemed "cool" or something like that.
Imagine a bunch of Valley Girls walking around with these strange hats. Fins and fish mouths... what a strange new fad.
こく
たに, や
せ
Hanging around with all the Valley Girls in the sunny area of LA is also a robot. It's WALL-E's distant (and lazy, lounging) relative, TAN-E (たに). He sits around getting a tan in LA with the Valley Girls while his cousin picks up trash.
What a jerk he is. Imagine the deep tan lines on TAN-E as well. He's the epitome of robot laziness.