Pornography that depicts an, in fact, real octopus being ejected from a human orifice. The act is classically accompanied by a copious amount of unappetizing muscular contractions. The resulting ejection is considered a delicacy in at least nine countries.
Girl: Look at all the octopods!
Boy: Octopi, you mean.
Random Stranger: No, octopuses.
Girl: Actually, they're both right, but octopods is a lot more fun to say.