gistfile1.rb

class SomeParent
   def foo
      puts "Parenting is fun."
   end
end

module SomeModule
   def foo
      puts "Module time."
   end
end

class SomeChild < SomeParent
   alias :parent_foo :foo
   include SomeModule
end

s = SomeChild.new
s.foo        # => "Module time."
s.parent_foo # => "Parenting is fun."