Speaking Head emoji is a silhouette of a head, which obviously belongs to a male character, with an open 👄 Mouth, with lines coming out of it, which symbolize the process of speaking. Along with its obvious meaning of speaking, the feminists may use this emoji as an illustration to what is called mansplaining. This is the term for the condescending tone used by men when speaking to women (i.e. when the 👨 Man explains something to a 👩 Woman as if she was much sillier than he is by default — based only on her gender, not on her actual intellectual background).
Examples of using
“Look, another man speaks of women as if they were fools 🗣️”
“Here’s what he said 🗣️”