"Who is it?" Amy asked, peering through the peephole. Amy say her next door neighbor, and long time secret crush Dave standing there holding a few envelopes. She got butterflies in her stomach for multiple reasons. One, she didn't want him to see her like this. Second, her cock was rubbing against her legs in a very awkward way. And lastly, just looking at Dave was making Amy hard.
"Dave, from next door. Listen, I forgot to stop by yesterday, but I've got some of your mail here." he said.
Amy hesitated to open the door. She knew if she didn't it would look suspicious. But if she did, she risked Dave seeing her male equipment. Male and EQUINE equipment. So pulling her robe as close to her body as possible, and making sure only her top half would be seen, Amy opened her front door.
"Hi, thanks." Amy poked her head around the corner and reached out to take the envelopes from Dave.
"No problem. You'd think the postman would get it right, you living here for so long." Dave smiled. There was a dull THUD as Amy's cock shot out of its sheath and hit the door.
"You alright?" Dave asked. Amy felt cheeks getting hot, and a bead of sweat roll down her face into her cleavage.
"Stubbed my toe on the door. I'll live." Amy tried to say as casually as she could. But Dave didn't buy it.
"Seriously Amy, are you okay? You look kinda pale. And you're sweating like mad." Dave put a hand to Amy's forehead, and her legs shook. He was touching her, and that wasn't helping matters. Amy's cock started to drip pre. She shifted her legs so that the liquid wasn't running down the front of her shaft.
"I think I've just got some kinda 24 hour bug. Don't worry, I'll be okay. But maybe you should go so you don't catch it too." Amy said, trying so very hard to stay calm. She thought nice, placid thoughts in an effort to make herself go limp again. But nothing seemed to work.
Behind her, Amy's horse pucker started throbbing as her arousal grew. Dave's face was inches from hers as he continued to inspect her. At one point, he was so close Amy was sure he was going to kiss her. She balls tightened, begging for release. She'd never believed in blue balls before, but she sure as hell did now.
"Do you want me to call someone? An ambulance or doctor?" Dave asked, trying to enter the house. Amy maintained her position behind the door and fervently shook her head,
"No, I'll be okay. I just nee.... eeigh!" Dave reached down to grasp the door handle, but instead his hand brushed against the staining cock between Amy's legs. She couldn't hold back any longer, and came. Thick globs of horse spunk drenched Dave's pants and torso.
Neither had much of a chance to reaction. After Amy came, another onslaught of changes assaulted her body. And meanwhile Dave's body started to bubble with changes. His moderate sized sock was suddenly twice as long, and so hard. His balls fuller and rounder, not to mention encased in a dark brown, almost black leathery hide.