Human brain is the most outstanding object in world. It functions 24hrs a day, 365days a year. It functions right from the time we are born, and stop only when we enter the examination hall.
Customer: If I post this letter tonight, will it get to Karachi in two days time?
Post Master : Yes sir, it definitely will.
Customer : I bet you, it won''t.
Post Master : Why not?
Customer : It''s addressed to Sialkot.
