ghost methods!

ghost.rb

class Student
  def method_missing(name, *args, &blk)
    "Sorry, I don't understand '#{name}'!"
  end
end

s = Student.new
s.no_idea #=> "Sorry, I don't understand 'no_idea'!"
t = Student.new
t.no_idea #=> "Sorry, I don't understand 'no_idea'!"

def t.method_missing(name, *args, &blk)
  if name.to_s.start_with? "no"
    "intercepting '#{name}'!"
  else
    super
  end
end

s.no_idea #=> "Sorry, I don't understand 'no_idea'!"
t.no_idea #=> "intercepting 'no_idea'!"
t.some_idea #=> "Sorry, I don't understand 'some_idea'!"