I'm not getting to sleep with this hard-on.

I sighed after a few moment of unrelenting strain in my trousers, the image of May's swaying ass fixed in my mind like a painting.

"This isn't going to work." I sighed, reaching down to unlace the trousers and pull them down to my knees. A few moments later I kicked off my boots and followed after with the trousers and my undergarments. My cock sprung up like a flag, thick and hard as I'd even been, and I go to work.

I imagined May coming back in, swaying seductively, and kneeling between my legs. I imagined her hands replacing my own and working the shaft with matronly skill. I saw her lips take the head and then the shaft, bobbing up and down as she frigged herself to a screaming orgasm. I imagined her pulling her titties free and wrapping them around my wet cock, and I imagined spraying her face as I thrust between her tits. I imagined the blank look on her face, the same I'd found on my sister all those weeks ago. And then I imagined my sister in her place, younger and more beautiful with her black hair and green eyes, sucking my cock with two fingers in her cunt.

The pressure released and I exploded with a grunt, a massive stream of jet-black cum flying through the air. Two more ropes shot up and offwards, flying in random directions, coating my torso and the ground around me. As I came I felt a sudden and inconceivable wave of hunger, strong enough to obliterate my consciousness and leave me senseless in a pool of my own spunk.

When I woke up a while later, I found that I was still covered in the stuff. It hadn't dried out, surprisingly, a property I hadn't know before and a few idle thoughts crossed my mind as I stood and looked around for something to mop the stuff up with. I was alarmed to find the skeletal nature of my hands and wrists, as if I'd lost a significant amount of my diminished bulk over the last couple of hours.

It was getting difficult to stand, to move around or think. Even grabbing the towel from the side of the barn, a horse blanket or something, was nearly the match of me. Mopping up my cum and lacing on my trousers brought me to the brink of exhaustion, and I fell asleep face-down with the cum-soaked blanket in my hands.