My girlfriend shampooed and laughed at me.

Because you are already a couple, I think you should appease her before washing, so that she can make sure that you are really just washing, not hugging a girl. Then, after washing, you should report it first. Girls often feel insecure in the process of love. Only when you report it will she feel at ease. But you played a well-meaning joke, but it made her feel that it was a joke to wait for you so hard on the mobile phone screen, as if she were herself. So normal girls get angry. At this time, you should try your best to comfort and coax her. Don't just make a phone call. She can't ignore you. You can't continue chatting or say goodbye until she forgives you. I hope you can get her understanding and stay with her for 99 years.