They were about to do something when Tiffany was interrupted. She looked at Katie.
Katie was squatting and her face was scrunched up. She made several grunting noises.
Tiffany moved around Katie so she could see Katie's butt. As Tiffany watched, Katie's diaper expanded a bit.
Tiffany exclaimed, "oh my God!"
"What?" Katie asked.
Tiffany said, "you pooped your diaper!"
Katie replied with...