This one goes back, way back, to the second episode of the first season call “The Series has Landed”. Fry’s first delivery is to the moon, and sadly he finds that it’s been heavily commercialized since the year 2000. They encounter a local farmer, who wears this hat. For those who don’t know, in the US south the slogan “The south shall rise again” refers to the civil war. I love that this implies that at one point the inhabitants of the moon rebelled against some planet, presumably Earth.

Here’s the link to the product as a pin, but you can view the design on multiple items if you’re interested.