gistfile1.rb

class A
  def method_missing(*args)
    puts "Missing in A"
  end
end

class B < A
  def method_missing(*args)
    puts "Missing in B"
  end
end

class C < B
  def method_missing(*args)
    puts "Missing in C"
    super
  end
end

a = A.new
b = B.new
c = C.new

a.no_method

#=> Missing in A

b.no_method

#=> Missing in B

c.no_method

#=> Missing in C
#=> Missing in B