"Battle not with monsters, lest ye become a monster." Too late. I've been
fighting against the Beast for my whole life.

Yet somehow, as I grab a fist full of your hair and make your face
into my fucktoy, I keep enough presence of mind to let you breathe
once in a while.  I can barely stand the pleasure, and watching my
shaft pistoning between your lips turns me on even more.  I hope you
can taste my pre-come.

And finally, the knot in my groin gets as tight as I can bear, and
it's my turn to gasp.  A moan gets strangled in my throat.  Just in
time, I yank your head back, and grab my cock in my other hand.  I
stiffen, yet make sure the first jet from my cock sprays across your
face, for the principle of the thing. I then thrust my still-spurting
cock back into your mouth, also for the principle of the thing.

And then I let myself go.

When I finally catch my breath, you are still sucking me gently, extracting
the last few drops. "Good girl," I sigh.  "Good girl."

You finally look up into my eyes. I can smell sex and drying sweat and
feel your warmth against my legs.  The beast, sated for now, strolls
back to his cage.

But he'll be hungry again soon.