Hell yes!

I didn't need more than a moment to think it through. This was the opportunity of a lifetime!

"Where do I sign?" I asked.

The demon's grin got wider, and she started to rise off of her dildo.

"I don't like documents of paper or parchment. When I sign a deal, it is done the natural way, body to body, she said, her hand rubbing her cunt. As she was rubbing it, it transformed into not one, but two giant dicks. "Come over here and lick my juices from the dildo" she said, "while I fuck you senseless. That is the proper way to seal a deal."

And so she did. Both her cocks were more than twice the size of any of the men I'd fucked earlier, and the dildo was too thick to fit in my mouth. But I licked it all over, while Lilith went to town on my ass and pussy. And it was clear that the demon was no ordinary fucker. I'd been turned on and wet as hell the whole day of fucking, but the first lick of the demon-juice-covered dildo was enough to push me over the edge here. I think that all kinds of bolidy fluids from Lilith must have been a powerful aphrodisiac, and it wasn't long until I was screaming in pleasure, pushing back against her cocks to take them as deep inside me as would be possible.

After what simultaneously felt like only a few moments and an eternity, I had had more orgasms than I could count, and probably taken barrel-loads of demon cum inside me. Lilith did not seem capable to run out of energy, no matter how much she jizzed. Her grunts of pleasure was the last thing I heard as I passed out after yet another orgasm.

When I woke up, I was in my own room, in my own bed, with nothing to show whether or not my encounter with Lilith had been real, or just a very weird wet dream.