As Sally changed her she wondered if she was doing it because she wanted to help, or because of what Liz had done. A warming twinge between her own legs answered her question. She taped a new diaper on, then hurried to roll the old one up and get rid of it before anything gross could happen.
As she stepped away from Zoe she felt something wet grab her leg. Before she could adjust she fell on the floor, the used diaper ended up under her face. “Owww, Zoey! Bad baby…” But her attention on Zoe faded as the twinge grew into intense waves
Sally didn’t remember picking up the diaper. But she didn’t care. Once she had her pants off she couldn’t stop if she wanted to. Several minutes later Sally’s body shuddered and the diaper dropped to the floor.