THE TIME VEHICLE

In the afternoon, Wasi went out for Akif's house. But when he was walking along the road,something awkward happend!He met with two men.
One man was around 80 years old and the other man was about 50 years old. It seemed that they were father and son.
As soon as the older man saw Wasi, he started screaming, "Oh my God! Is it you? I just can't believe that I've met with you after so many years! You are our God, our lifesaver! "
"I think you are misunderstanding. I don't know you. We've met for the first time",said Wasi surprisingly.
"No! Not at all. I've clearly recognised you. Still today, I can memorise that day when you saved my child's life. I just can never forget that day and you!",said the older man confidently.
He,who is being told to got saved by Wasi was older than him! Wasi was only 16 and that man was about 50!Then how could that be possible?