Body shaming is the act of degrading someone by using unflattering or disparaging remarks about their appearance. In addition to “fat shaming,” you could also encounter derogatory remarks if you’re underweight or in regard to a particular body area.
You can criticize yourself or other people in this way. You might be hard on yourself and feel self-conscious about your weight or how your body appears. Even worse, you might say things like “I feel so fat today” or “I need to stop stuffing my face with food.”
Body shaming can be done by your parents, siblings, friends, or even strangers. It can be done in person or remotely via the internet and social media.
Here is a video that explain what is body shaming: https://www.youtube.com/watch?v=yE_WU_vYM94