A sit in the shade!
Not all, but many people are too selfish and just consider about themselves. Yesterday my wife and I had gone to her doctor and because the doctor had gone to surgery she hadn't come till then. The office was full of patient and there were not enough seats for everyone, so dozens of pregnant women had to stand and it was not suitable for them. What I want to say is that in this situation, those who had become earlier and had sit on the seats, didn't help others and tried to not share the seats! Once, one of them wanted to go to the toilet and she put her purse on the seat to insure she wouldn't loose it! It was more beautiful if they had stood up after a while (i.e. after one hour) and had let the others to sit.