By pushing me onto my back

Planting a hand firmly on my chest, the Succubus Facilitator firmly gives me a push, and I fall backwards onto my ass. Fortunately, there were cushions awaiting my fall below - perhaps set up there ahead of time just for this exact moment.

"You're going to learn that, no matter what part of my body it is, every square inch of me can milk you dry," the demonic woman says, lifting up a leather booted foot, before promptly placing it down atop my groin!

"Ah, but first..." she says, snapping her fingers. Suddenly, in an unexpected maneuver, the Succubus Facilitator causes a pair of boxer briefs to spontaneously manifest around my crotch, creating a thin layer of fabric between my cock and her boot! "There we go. Nice and snug in there?" She asks, and I can only groan and nod in agreement. The briefs were shaped in a very particular fashion to have a fabric tube specifically made for my cock, like a sleeve. "Good," she says, as she begins to pump her leather sole up and down my length, causing me to moan out in utter bliss.

"Those briefs are made of a highly absorbent material... you could probably pump over a gallon of jizz into those and they'd still be able to take it all no problem! And trust me, you'll need it for when you fall asleep..." she says mysteriously.

In between my moans stemming from her bootjob, I'm barely able to ask what she means by that.

"Well, you see how we're the only one's here? Haven't you been wondering where the other girls that'd be with me are right now?" She asks, and I nod. I had been wondering that. The Latex Facilitator had her group, so where was the Succubus Facilitator's?

"I turned them all into proper succubi while you were gone," she says in explanation. "Then, I sent them all into the dream world to wait for you to pass out between semen milking training sessions... so no matter what, you'll be teased and drained by succubi whether you're awake or not!" She says with a laugh, making me audibly gulp in response.

"In fact, why don't you go ahead and give them a visit right now?" She says, before suddenly ramping up her bootjob to a ludicrous speed, the rough feeling of her boot forcing my cock to rub against the coarse fabric of the briefs sends my hips surging up into the air as I cum uncontrollably, the Succubus Facilitator no doubt tweaking my sensitivity to temporarily overload my brain as I feel rope after rope get soaked into the strange underwear she's put on me...

...causing me to pass out.