What An awesome idea. If none of your favourites are not out there and you don't feel like starting a new relationship. (Or if you just want a quick thrill). This is a really good idea. Lots of option poses. And the Tentacle moved in a random movement. (So no go would be the same).
Actually getting carried to the tentacles whilst been tied up (struggling) and then watched by an audience as well would make the ordeal even more great. With lots of slime too.
I'm really up for this one.