class Foo
  def foo
    42
  end

  def bar
    23
  end
end

class Bar < Foo
  def foo
    0
  end

  def bar
    smalltalkish_super.foo
  end
end

class Baz < Bar
  def foo
    smalltalkish_super.bar
  end

  def bar
    0
  end
end

Baz.new.foo # => 42