Just for Fun

There is one worker who works in 28th floor of one building. Suddenly, there is a person who shouts from base floor of that building. “Robert…Robert…..your son bumped by train…”. Automatically that worker jump from 28th floor. When his body was passing 15th floor, he remembers that he jumped from 28th floor. When his body was passing 9th floor, he remembers that he never had a son, and when his body is passing 2nd flood, he remembers that his name is not Robert……hahaha....