Jane was sent by her Chicago-based company to a business convention in Tokyo, Japan. While at lunch, she and several other Americans in attendance sat together. As they laughed and enjoyed themselves, Jane noticed that many people glanced at them uncomfortably and whispered to each other. When Jane asked the young waitress what was wrong, the girl avoided eye contact with her, shook her head without saying a word, and quickly walked back to the kitchen. Which of the following statements is most likely true about this scenario?