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To my surprise, this throwaway joke was met with legitimate curiosity both online and off. One friend replied that he would totally pay for me to get inked with this phrase, while a work colleague asked if tentacle porn was actually a thing. When I brought this up in a meeting which, as a sex editor, is something I can absolutely do , the room was divided between those who were shocked tentacle porn exists and those who were shocked others didn't know it exists. So let's start with the obvious: Yes, tentacle porn is very much a real thing. But what is it?