diff --git a/public/auth/register.php b/public/auth/register.php
index 36172ef8..fb1cb9c0 100644
--- a/public/auth/register.php
+++ b/public/auth/register.php
@@ -43,10 +43,16 @@ while(!$restricted && !empty($register)) {
 
     $checkSpamBot = mb_strtolower($register['question']);
     $spamBotValid = [
-        '19', '21', 'nineteen', 'nine-teen', 'nine teen', 'twentyone', 'twenty-one', 'twenty one',
+        '21', 'twentyone', 'twenty-one', 'twenty one',
+    ];
+    $spamBotHint = [
+        '19', 'nineteen', 'nine-teen', 'nine teen',
     ];
 
     if(!in_array($checkSpamBot, $spamBotValid)) {
+        if(in_array($checkSpamBot, $spamBotHint))
+            $notices[] = '_play_hint';
+
         $notices[] = 'Human only cool club, robots begone.';
         break;
     }
diff --git a/templates/auth/register.twig b/templates/auth/register.twig
index e6a93fed..402a2788 100644
--- a/templates/auth/register.twig
+++ b/templates/auth/register.twig
@@ -15,7 +15,14 @@
                         <div class="warning auth__warning">
                             <div class="warning__content">
                                 {% for notice in register_notices %}
-                                    <p class="auth__warning__paragraph">{{ notice }}</p>
+                                    {% if notice == '_play_hint' %}
+                                        <audio autoplay controls style="max-width: 100%;">
+                                            <source type="audio/ogg" src="//static.flash.moe/sounds/twentyone.opus"/>
+                                            <source type="audio/x-caf" src="//static.flash.moe/sounds/twentyone.caf"/>
+                                        </audio>
+                                    {% else %}
+                                        <p class="auth__warning__paragraph">{{ notice }}</p>
+                                    {% endif %}
                                 {% endfor %}
                             </div>
                         </div>