Parity Question - Please Help

Just wondering if anyone could define 'tentacle porn' for me? 

I'm sure someone is well armed to assist. It's really been octopying my thoughts. 

Here's my friend Ron to help clear it up.

https://imgur.com/gallery/tmfGG

I am under the impression that it has to do with making a Bu Kake at a Lemon Party, but I could be wrong