What are some of the stories you've experienced that ended unexpectedly?

Bus, I wore high heels running around all day, tired feet can not stand straight, in the platform was not easy to wait for the bus home, a car to see an empty seat to hurry to sit down, hoping to relieve my swollen and aching legs, then up a few just after the square dance of the old man, laughter on the bus, but there is no more empty seats, the old man looked at me, the people around me also looked at me, seems to be waiting for me to make point what action, I look at each other with them, with an embarrassed smile hard to stand up.