Do you judge fat people?

Well the fundamental problem with humans is they tend to analyse people from time to time. From that guy behind the McDonald Counter to our best pal or buddy. We are constantly watching them, observing their moves, actions and analysing what does it mean anyway. So, we judge people everytime without even knowing them. We judge by how they wear their clothes, what they wear, how they work, how they eat to the most nonsense ones like how they sneeze. With our limited knowledge and understanding of people we start thinking in a direction and gives reason for the actions such as "Maybe he is lazy because, he is fat!", "His clothing is so sloppy, how can his work be good ?".
So yes not only me but I think everyone I know of judge people before even trying to understand them (how are they are as humans beings? are our judgements right?). We never really make that effort, maybe thats the reason why there are so many human conflicts.
But at the positive side, whenever I have made an effort to understand the other person without prejudice I have always surprised myself, on how wrong I was in my previous judgements.