The fat acceptance movement is all about making people feel good and comfortable in their own bodies, no matter what shape or size they are. It's a group of people who don't want anyone to feel bad about themselves just because they have a little extra weight.
Think of it like this: some people are tall, some are short, some have big hands or feet, and some have round tummies. None of these things makes someone less valuable or less worthy of respect. The fat acceptance movement is just about telling everyone that their bodies are okay just the way they are.
Some people think that being overweight is unhealthy, but the fat acceptance movement isn't saying that being unhealthy is okay. What they're saying is that everyone should be treated fairly and not be judged just because of their size. People should be given opportunities and respect no matter what they look like.
So, if you see someone who has a bigger body and they seem happy and confident, that's totally okay! And if someone is trying to make them feel bad about themselves because of their size, you can speak up and remind everyone that we should treat people with kindness and respect no matter what they look like.