titleize verbose code

titleize.rb

def titleize(word)
  title = ""
  words = word.split
  words.each do |w|
    if words.first == w
    	w.capitalize!
    	title << w
    	title << " " unless w == words.last
    else
    	w.capitalize! unless ["a", "and", "the", "over"].include?(w.downcase)
    	title << w
    	title << " " unless w == words.last
    end
  end
  title
end