In her bedroom, Mary heard her phone buzz. She went left the bathroom, and found her boyfriend had texted her. She'd been so caught up in her transformation, she forgot they made plans today. Kevin would be here in fifteen minutes.
"Hmm... I could have some fun with him..." Mary thought looking at the vials. Her loins ached at the thought of being rutted by a handsome boar. Mary went into the kitchen for a glass, and poured the male pig vial into it. Then added some water, hoping that wouldn't compromise the vial's effectiveness. Then wrote a note to Kevin that she had gone out to do a quick grocery run and would be back in five minutes. It took a bit of work, writing that note. She couldn't text him, her hoof-hands were too big for the keyboard. Holding a pencil proved to be just as tricky, but she managed to write close enough to her old handwriting. She left the note in the kitchen, and the glass beside the sink like she had just poured it.
"Let's hope this works." she said. She slipped into another room and waited. Her body shaking in anticipation. She heard Kevin pull up, and giggled a little. It came out as a series of snorts and squeals. Kevin knew where the key was, and he let himself in.
"Mary? You up yet?" he called into the house. He set the keys down, and took off his jacket. Mary peered around the corner, and watched as he found the note she left on the counter.
"What the heck is that stuff?" Kevin wondered aloud, his eyes spotting the weird glass of blue liquid. He wondered if Mary was trying one of those weird liquid diets. She didn't need to lose weight, but she was always a sucker for those sorts of things.
Kevin walked to the couch, the glass in hand. He sat down, turning on the TV and took a few sips. He licked his lips at the sweet taste, and in less than ten minutes finished it. Mary giggled again when she noticed Kevin's clothing had started to strain. He tugged at the collar of his shirt, which felt awfully tight. His body felt too hot, and constricted. He kicked his shoes off, and flexed his toes. But he didn't have toes anymore.
"What the fuck!?" he screamed, jump up as his feet began to change. He grimaced as bones reshaped, and his nails became hard and black. His toes stretched out, and melted together until he had pig hooves.