Tim can't resist the silky sensation

Tim bent over and picked up Isabelle's cum encrusted thong and started to slide them up over his hips. His precum leakage accelerated.

Pulling it all the way up... it nestled between his ass cheeks. He loved the feeling of the ultrasoft fabric against his cock and the thin web rubbing against his taint and anus.

He was 100 lbs heavier than her and the fabric strained to cover his expanse. His miniscule erection poked out the top of the front elastic band. Tim's cock leaked precum down the front, soaking the panty and ran onto his hairy leg. His balls fell out on either side of the bottom.

Tim posed in front of the bathroom mirror and was both turned on and repulsed. He'd seen Isabelle putting on makeup dozens of time in these same panties and nothing else... her round ass thrust out and the fabric barely covering her pussy. Tim imagined a world where he could be that same vision.

He strode into the bedroom and found Isabelle's wand and a vibrating dildo in her nightstand. He lay down on the bed and began to rub the wand on his cock tip. Contorting himself, he moved the thong aside and slowly worked the tip into his ass. When he experimented with this in the past, he could barely get the first inch in. Today was different... his cum that drenched the thong had nicely lubed his sphincter. The dildo started to slide in easily. As it passed by his prostate he felt a surge of pleasure and the cum leakage accelerated to a steady stream onto his belly. Tim felt an odd sensation. He stopped pushing on it. Slowly his rectum pulled the massive object all the way in til it stopped at the rubbery balls.

The sweat from his edging toward orgasm wetted the panties down. The moisture reactivated the latent virus in the panties and it seeped into his pores.

Tim began to feel the sensation of an orgasm... but it was different, more intense and didn't stop. His cock began to spurt cum in pulses with each successive wave of pleasure.

Tim began to fantasize about what he had seen less than an hour ago, everthing that he intended to shower away was coming back into focus. Watermelon sized breasts leaking streams of milk and cocks the length of his arm spewing gallons of cum.

Strangely, the hue of the stream of semen began to change color...