Waiting Their Turn

When Kayla finally took the last bite out of her hamburger, she wiped her hands on the tissues and got up so she could go to the toilet. When she got there, she observed that the door to the toilet is locked.

TripAdvisor

Kayla thought, “Someone must be inside the toilet.” She looked back at her mom and saw Nicole smile at her. Then, she heard a noise and found that it was coming from inside the toilet. What was going on inside?