If you are selling constipation medicine, health magazine, newspaper etc you can use this fantastic idea; :D http://dilawar.wordpress.com/2006/10/13/lets-talk-in-the-bathroom/
Men are from google and women are from yahoo, read full article why they use different search engine. :D
http://webpronews.com/insiderreports/marketinginsider/wpn-50-20051229MenAreFromGoogleWomenAreFromYahoo.html