紧急翻译一段English joke!3Q!~

紧急翻译一段English joke!3Q!~
The following story took place at an American airport .
The long wait at airport security was tough on the five-year-old boy.To keep him from making a disturbance ,his mother decided to distract him with a civics lesson .
"Johnny ,do you know what's special about America?"
"No ."he pouted.
"In America,everyone is free to do things,go places,own whatever theywant...anything except hurt other people."
Johnny looked ahead at the people being searched by the airport security guards,and nodded ."I think I want to go to America."