“半拍萌” (ban pai meng) refers to the people who always respond slowly, but not disagreeable, instead of making others feel adorable. On the other side, there is also some people think it is a behavior that people only show half face when taking photos as they will look more lovely in that way in the picture.
Example joke about “半拍萌” (ban pai meng):
Teacher: You need to ask your guardian to school tomorrow.
Xiaoming: My parents are not home. How about my uncle?
Teacher: OK. He has to come.
Xiaoming carries his three years old uncle to school next day.