"Well, what have you tried?" Jess asks.
Mary blushes and says, "Well, ummm... I tried the cow vial." Mary turns away and blushes a deep red.
"A cow, huh? Well, how was it?" Jess lays a hand on Mary's arm and gently turns her back toward her.
"Well, actually, I loved it!" Mary keeps blushing, but grins.
"I wanna try one, but I'm nervous, this is all so strange. If I try one will to do it too? And well, I wouldn't mind trying the cow. That sounds somehow, fun and sensual." This time Jess turns away and blushes. Jess was suddenly very interested in becoming a cow, she had never had such thoughts before. But, confronted with this strange new experience, it seemed the right thing to do.
Mary giggles and nods. "OK! We'll both be cows! But, only drink less than half the vial, we don't want to be whole cows." Mary winks and takes out the cow vial.
Opening the vial, now full again, Mary swallows about half the vial and hands it to Jess. She takes it and with a deep breathe ups it and drinks the potion.