Phoebe: Ninety percent of a woman's pheromones come out the top of her head! That's why women are shorter, so that men will fall in love when they hug them! [Ross is staring at Phoebe] Oh, come on, Ross, you're a scientist.
  
   Phoebe : Ninety percent of a woman's pheromones come out the top of her head! That's why women are shorter, so that men will fall in love when they hug them!  [Ross is staring at Phoebe]  Oh, come on, Ross, you're a scientist. 
  http://www.tv-quotes.com/shows/friends/quote_3172.html
  

