Here is story!!!
Once a guy used to study late night sitting close to window he can see out on read people coming and going , One night he noticed, some man entering his home from the front door very late at night. He got scared but didn't tell anyone, then again he say a man entering his house from the front door very late at night , he also noticed that man leaves home very early morning. He thought he will ask his mother that who is that man who comes to their home late night. Next morning, the guy wakes up but forget to ask his mom and he leaves for school. Again that night he notices some man walking in the home from the front door around 3AM and leaving as early as 5AM of morning, then he makes up his mind that he would go and first ask his mother who is that person that comes home late night and leaves very early in the morning.
Next morning he gets up and straight away rushes to his mom, he ask (full with curiosity)
"Mom who is that man who comes to our house late night and even leaves early morning."
His mother replies "Oh that man who walks in late night, son he is your father, He is a VFX artist !!!"