For the porpoises of this discussion, let's imagine that I walk around all day, everyday, with a spear up my nose. You try to talk to me about the spear, but I don't understand what you're trying to say, because you're a porpoise, so you don't speak my language. I try to teach you, but you just roll your eyes at me, as though all you care about is swimming about and eating fish.

Why do I have a spear up my nose? How did it get there? And are all fully aquatic marine animals dicks, or is it just porpoises?

Oh, and by the way, although it will at first no doubt escape your notice, later on, I will reveal that this is in fact an ingenious metaphor about class consciousness.