B: Eccentric Concentrics

From time to time in my daily encounters with the public, people ask me, "Dude, what planet are you on?"

I know most people would consider this question rude and somewhat probing but I don't. I mean, Hel-lo? Could my planet be more obvious? It's not exactly private information. I was considering the planet question last night and thinking about round objects and what's inside them and of course everything eventually relates to photography, and I came up with this listing which I hope settles the planetary issue once and for all.