:The Succubus Fantasies:

You remember what the succubus told you. You are here to provide sexual desire. If you're to succeed in this realm, you're going to need to play by it's rules. You kick of your shoes and strip from the waist down. It's warm in this place. As you move towards the slime it begins to glow softly. You grip the edge of the small table and sink your dick into the soft slime.

It has the texture of jelly, but once your dick is in, something starts to happen. The slime seems to grip on.