AP Photo/Mark DamonParis Hilton was detained in Japan overnight, then sent back home to the United States. Apparently Japan has very "strict rules" regarding its visitors and any sort of affiliation with drugs. I guess her "friend" wasn't available to step forward and remind Japan that the cocaine Paris was found with belonged to her. I thought it was strange that immediately after her court date in Vegas she decided to leave the country. Then I read that the trip had been planned for months. Paris was going to Japan to launch her fall-winter "line." I feel so stupid. I didn't realize that cocaine was seasonal.