As Mary opened the door, she got the first good look at her cousin she'd had in years. Last time, Pearl had been 14, with a late bloomer's body only just beginning to go through puberty. Now, four years later, the eighteen-year-old certainly had bloomed! She'd shot up a few inches, bringing her to a rather tall 5'10, a whole 6 inches taller than Mary. But she wasn't a beanpole, oh no. Her breasts had blossomed out to succulent D-cups, and her hips were just as wide as her shoulders. Her firm, bubble butt stuck out far behind her, giving her a phenomenal hourglass figure. A slight muscle tone ran over her body, suggesting lean muscle under the extra padding. When she saw her cousin, she dropped her handbag as a massive, perfectly white smile broke over her face.
"Mary!" she squealed, grabbing her older cousin and hugging her tight. Unfortunately (or rather fortunately, depending on your point of view) their height difference meant that Mary's face was squished deep into the cleavage of her massive boobs. Her cock began to stir, and she quickly squashed it down and extracted herself from the busty embrace.
"Pearl!" she replied, acting as natural as she could. "It's been ages, how are you?"
"Oh, I'm doing well, shame about the apartment though. I can't thank you enough for letting me stay here." She gave Mary a kiss on the cheek. "Anyway, I'll just pop down and grab my luggage. Don't worry about helping me, you've already done enough."
Without another word, she raced back down the stairs to her car. Mary would have told her that the elevator wasn't working, and that it was three flights of stairs to her little flat, but with her cock at half-mast from just the sight of Pearl, new thoughts were beginning to filter through her mind. If Pearl walked up all those stairs, she'd be thirsty, right? And if she was thirsty, Mary could make her a drink spiked with one of the vials that would let her fuck her hot, sexy cousin to her heart's desire. She could even mix a few to make her even more desirable!
She went to the kitchen and grabbed out two glasses, filling each one with dark cola to hide the color of the vials. Of course, then came the choice.