Not wanting to harm any of her family members, and not caring to experiment on animals, Jen slipped the pill into Mary's breakfast sandwich while her back was turned.
A single bite was all it took. Jen watched as Mary seemed to regress in age, back to her 20s. Her skin was much smoother, her hair fuller, her boobs less saggy - if that was all it had done, Jen would've thought this might not have been so bad. However, that is *not* all it had done.
Mary undid the zipper in her pants, allowing a 10-inch penis out, that was growing thick and erect. No, wait, 12 inches. No, 14... It kept growing. It kept growing until it reached up to Mary's own lips. The sandwich disappeared as reality changed. The huge dick parted its owner's own lips, and shoved itself down Mary's throat. Her throat moved as if constantly swallowing, and Jen realized with part-disgust and part-arousal that Mary's only source of food now was her own semen. Unperturbed, she immediately went back to her duties, never stopping her autofellatio session.
Jen took a small snack to serve as her breakfast and rushed out of the house. It would be just another hour before she'd have to witness something like that again.