Prompt

The feral horse pounds his massive, veiny cock into the dragon's tight pussy with deep, aggressive thrusts, pistoning in and out while his heavy, saggy balls slap against her ass with each forceful impact. The power of the thrusts sends ripples through the dragon's body, making her small breasts bounce and her tail sway, while the horse's sheath and heavy testicles swing heavily, the thick cum already leaking from her stretched hole dripping in glistening strands to pool beneath them. A slow orbit circles the mating pair, capturing every detail from shifting angles as wet squelching, rhythmic flesh-slapping, and the horse's primal grunts fill the barn, underscored by the dragon's shivering, lust-drunk moans.