"Daddy?How did I come into this world?" 
    "Well,my child,someday I"ll have to tell you anyway." 
    "So why not today? Please!" 
    "OK,but listen carefully." 
    "Mom and Dad met each other in a cybercafe. 
    In the restroom of that cybercafe,dad connected to mom. 
    Mom at that time made some downloads from dad's memorystick. 
    When dad finished up-loading we discovered we used no firewall. 
    Since it was too late to cancel or delete, 
    nine months later we ended up with a virus."