Judging someone on appearance is not OK. Doesn't matter if its height, weight, skin tone, or anything else. You shouldn't judge a person by their exterior because you don't know their story. There are hundreds of reasons someone might be overweight and most off them are out of a person's control. People need to stop making negative humour about exercising and they need to start embracing it. If more people exercised and spent more time finding inner peace the world would be a much healthier and happier place.