"Dog," Amy said and pushed the lever down.
"Amy! What did you do?!" Lina felt something grab her from behind and pinch her. She tried to squirm out of the chair but it held her down. "Amy, help me," she pleaded through teary eyes. She tried to get up again, managing to get a little further off the chair before being painfully yanked back down. She tried one more time, tears of pain welling at the corners of her eyes as she streetcchhed forward. This time Lina succeeded. Abruptly the pressure holding to the chair disappeared and she tumbled to the floor. She dried her eyes and slowly stood. "Why did you do that? It really hurt." She hadn't yet noticed her new appendage.
"Lina. You're welcome."
"Welcome for what?"
"For this," Amy said grabbing Lina's newly created tail.
Lina looked over her shoulder. "OH MY GOD! I HAVE A TAIL!" She just stood staring at the long blonde tail that now hung out from her jeans. She jumped slightly when it started wagging. She finally reached out and grabbed ahold of it and felt the soft fur that covered it. She spent a minute just rubbing the fur of her tail, eye's closed as she felt the soft fur running through her fingers while trying to comprehend feeling her fingers through the tail itself. Her arousal started to grow again, stronger this time, and she looked at Amy lustfully. "Thank you."
"I'm sorry that I had to do it like that but I kneeighw that was the only way that you would go through with a change of your own. I knew I neeeiighhded to share the best thing that has ever happened to me with my best friend. So are you...."
Lina stood on her tiptoes and interrupted Amy by pulling her horsey face down to her level, giving her a lingering kiss on the muzzle while also probing her friend's new mouth with her tongue. They broke after a few seconds. Now it was Amy's turn to be shocked and embarrassed.
"I, I didn't kneeighow that you..." she said, flustered, "You should have told meeighh you were inter..."
"I'll make up for it later. Show me how to become more like you," Lina said to Amy firmly. They walked off arm and arm towards the hair dryers.