gistfile1.rb

class Object
   def new_method
      puts "hi from a new method"
   end
end

class One
end

a = One.new
a.new_method # puts "hi from a new method"

def a.funky
   puts "Funky"
end

a.funky # puts "Funky"

b = One.new
b.funky # results in a method error.