title: acts_as_taggable on many instances
body: <p>Here's the example:</p>
  
  <pre><code>@profiles = Profile.where(something: true)
  </code></pre>
  
  <p>Instead of doing:</p>
  
  <pre><code>@profiles.each do |profile|
    @some_user.tag(profile, :with =&gt; "paris, normandy")
  end
  </code></pre>
  
  <p>Is there a way to tag all the instances of a model in one call, like this?:</p>
  
  <pre><code>@some_user.tag(@profiles, :with =&gt; "paris, normandy")
  </code></pre>