As he sat down on the toilet, he couldn't help but take in the sight of her delicate panties lying in the filth. The thought of giving her a surprise filled him with excitement and anticipation. He tried to hold back, but it was no use. Once he was done, he couldn't resist.
His hard cock already throbbing, he slipped off his own pants and underwear, steeling himself for the forbidden act ahead. With a deep breath, he squatted down over her panties, his massive erection jutting out behind him. "Here we go, baby," he whispered, already feeling the warmth of his ass against her silky panties.
He pushed forward slowly, feeling her scent envelop him as his asshole split open against her fabric. It was intoxicating, and he wanted more than anything to bury himself deep inside her tight little asshole. But that wasn't what they'd agreed upon. No, he had to stay true to their twisted fantasy and leave his mark on her panties instead.
With a deep groan, he let loose a hot stream of diarrhea right onto her panties. The sensation was both incredibly erotic and disgusting at the same time, and he couldn't help but grind his hips forward, rubbing his cock against her soiled panties in an effort to relieve the burning ache in his loins.
Moaning with pleasure, he continued to release thick, stinking shit onto her panties, each turd coated in a layer of his own thick creampie. The smell was overwhelming, but it only served to heighten his arousal. He could feel his cock pulsing and throbbing inside him, desperate for release, but he held back, savoring the moment for as long as he could.
