Why is going to the bathroom called singing? A woman sings as soon as she opens her mouth, and a man sings with a microphone.

There is a joke that says so. Xiao Ming often shouts to grandpa to pee. Grandpa thought it was elegant to pee, so he told Xiaoming to sing if he wanted to go to the toilet. So when Xiaoming wants to pee, he tells grandpa that I want to sing. Once grandpa was sleeping soundly, Xiaoming kept asking me to sing, and I wanted to sing. Grandpa said what song to sing at night, but Xiao Ming still said that he would sing. So grandpa said, then sing in my ear.

As for the woman who sings behind, it is understandable for the man to sing with a microphone, because the physiology of men and women is different.