diff --git a/4chan_x.user.js b/4chan_x.user.js
index bdef3fc5f..345823581 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -66,7 +66,7 @@
  */
 
 (function() {
-  var $, $$, DAY, Favicon, HOUR, MINUTE, Main, NAMESPACE, Recaptcha, SECOND, Time, VERSION, anonymize, conf, config, cooldown, d, engine, expandComment, expandThread, filter, flatten, g, getTitle, imgExpand, imgGif, imgHover, key, keybinds, log, nav, options, qr, quoteBacklink, quoteInline, quoteOP, quotePreview, redirect, replyHiding, reportButton, revealSpoilers, sauce, strikethroughQuotes, threadHiding, threadStats, threading, titlePost, ui, unread, updater, val, watcher;
+  var $, $$, DAY, Favicon, HOUR, MINUTE, Main, NAMESPACE, Recaptcha, SECOND, Time, VERSION, anonymize, conf, config, cooldown, d, engine, expandComment, expandThread, filter, flatten, g, getTitle, imgExpand, imgGif, imgHover, key, keybinds, log, nav, options, qr, quoteBacklink, quoteDR, quoteInline, quoteOP, quotePreview, redirect, replyHiding, reportButton, revealSpoilers, sauce, strikethroughQuotes, threadHiding, threadStats, threading, titlePost, ui, unread, updater, val, watcher;
   var __slice = Array.prototype.slice;
 
   config = {
@@ -120,7 +120,8 @@
         'Quote Highlighting': [true, 'Highlight the previewed post'],
         'Quote Inline': [true, 'Show quoted post inline on quote click'],
         'Quote Preview': [true, 'Show quote content on hover'],
-        'Indicate OP quote': [true, 'Add \'(OP)\' to OP quotes']
+        'Indicate OP quote': [true, 'Add \'(OP)\' to OP quotes'],
+        'Indicate Duckrolls': [false, 'Add \'(Duckroll)\' to cross threads quotes']
       }
     },
     filter: {
@@ -2581,6 +2582,27 @@
     }
   };
 
+  quoteDR = {
+    init: function() {
+      return g.callbacks.push(function(root) {
+        var quote, tid, _i, _len, _ref, _results;
+        if (root.className === 'inline') return;
+        tid = g.THREAD_ID || $.x('ancestor::div[contains(@class,"thread")]/div', root).id;
+        _ref = $$('.quotelink', root);
+        _results = [];
+        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+          quote = _ref[_i];
+          if (quote.pathname.indexOf("res/" + tid) === -1) {
+            _results.push(quote.innerHTML += '&nbsp;(Duckroll)');
+          } else {
+            _results.push(void 0);
+          }
+        }
+        return _results;
+      });
+    }
+  };
+
   reportButton = {
     init: function() {
       return g.callbacks.push(function(root) {
@@ -2962,6 +2984,7 @@
       if (conf['Quote Preview']) quotePreview.init();
       if (conf['Quote Backlinks']) quoteBacklink.init();
       if (conf['Indicate OP quote']) quoteOP.init();
+      if (conf['Indicate Duckrolls']) quoteDR.init();
       if (d.body) {
         return Main.onLoad();
       } else {
diff --git a/changelog b/changelog
index 07ba4c087..fcfad3c9a 100644
--- a/changelog
+++ b/changelog
@@ -1,4 +1,6 @@
 master
+- mayhem
+  new Indicate Duckrolls feature
 
 2.21.4
 - mayhem
diff --git a/script.coffee b/script.coffee
index f792b676b..3aaf29789 100644
--- a/script.coffee
+++ b/script.coffee
@@ -45,6 +45,7 @@ config =
       'Quote Inline':       [true,  'Show quoted post inline on quote click']
       'Quote Preview':      [true,  'Show quote content on hover']
       'Indicate OP quote':  [true,  'Add \'(OP)\' to OP quotes']
+      'Indicate Duckrolls': [false, 'Add \'(Duckroll)\' to cross threads quotes']
   filter:
     name:     ''
     tripcode: ''
@@ -1995,6 +1996,15 @@ quoteOP =
         if quote.hash[1..] is tid
           quote.innerHTML += '&nbsp;(OP)'
 
+quoteDR =
+  init: ->
+    g.callbacks.push (root) ->
+      return if root.className is 'inline'
+      tid = g.THREAD_ID or $.x('ancestor::div[contains(@class,"thread")]/div', root).id
+      for quote in $$ '.quotelink', root
+        if quote.pathname.indexOf("res/#{tid}") is -1
+          quote.innerHTML += '&nbsp;(Duckroll)'
+
 reportButton =
   init: ->
     g.callbacks.push (root) ->
@@ -2317,6 +2327,9 @@ Main =
     if conf['Indicate OP quote']
       quoteOP.init()
 
+    if conf['Indicate Duckrolls']
+      quoteDR.init()
+
 
     if d.body
       Main.onLoad()