diff --git a/addons/web/static/src/js/chrome/abstract_web_client.js b/addons/web/static/src/js/chrome/abstract_web_client.js
index 155690f9663..9efb2a3c937 100644
--- a/addons/web/static/src/js/chrome/abstract_web_client.js
+++ b/addons/web/static/src/js/chrome/abstract_web_client.js
@@ -81,6 +81,7 @@ var AbstractWebClient = Widget.extend(mixins.ServiceProvider, {
                 }
             });
         },
+        show_wow: '_onShowWow',
     },
     init: function (parent) {
         this.client_options = {};
@@ -313,6 +314,22 @@ var AbstractWebClient = Widget.extend(mixins.ServiceProvider, {
             this.notification_manager.warn(e.data.title, e.data.message, e.data.sticky);
         }
     },
+    /**
+     * Displays a thumb up, heart or peace image (randomly) for a moment (e.g.
+     * used when an opportunity is won)
+     *
+     * @private
+     */
+    _onShowWow: function () {
+        var className = 'o_wow_thumbs';
+        if (Math.random() > 0.9) {
+            var otherClasses = ['o_wow_peace', 'o_wow_heart'];
+            className = otherClasses[Math.floor(Math.random()*otherClasses.length)];
+        }
+        var $body = $('body');
+        $body.addClass(className);
+        setTimeout($body.removeClass.bind($body, className), 1000);
+    },
 });
 
 return AbstractWebClient;
diff --git a/addons/web/static/src/js/views/form/form_controller.js b/addons/web/static/src/js/views/form/form_controller.js
index 464cd06e44d..27d85778431 100644
--- a/addons/web/static/src/js/views/form/form_controller.js
+++ b/addons/web/static/src/js/views/form/form_controller.js
@@ -380,10 +380,8 @@ var FormController = BasicController.extend({
             });
         }
 
-        if (event.data.show_wow) {
-            def.then(function () {
-                self.show_wow();
-            });
+        if (event.data.showWow) {
+            def.then(this.trigger_up.bind(this, 'show_wow'));
         }
 
         def.always(this._enableButtons.bind(this));
diff --git a/addons/web/static/src/js/views/form/form_renderer.js b/addons/web/static/src/js/views/form/form_renderer.js
index b15e6b80131..2eda699c5d3 100644
--- a/addons/web/static/src/js/views/form/form_renderer.js
+++ b/addons/web/static/src/js/views/form/form_renderer.js
@@ -206,7 +206,7 @@ var FormRenderer = BasicRenderer.extend({
             self.trigger_up('button_clicked', {
                 attrs: node.attrs,
                 record: self.state,
-                show_wow: self.$el.hasClass('o_wow'),  // TODO: implement this (in view)
+                showWow: $el.hasClass('o_wow'),
             });
         });
     },
diff --git a/addons/web/static/tests/views/form_tests.js b/addons/web/static/tests/views/form_tests.js
index 2d23f4a9cb4..5643b2c92ca 100644
--- a/addons/web/static/tests/views/form_tests.js
+++ b/addons/web/static/tests/views/form_tests.js
@@ -4895,5 +4895,40 @@ QUnit.module('Views', {
         form.destroy();
     });
 
+    QUnit.test('wow effect', function (assert) {
+        assert.expect(3);
+
+        this.data.partner.fields.model_name = { string: "Model name", type: "char" };
+
+        var clickCount = 0;
+        var form = createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch: '<form string="Partners">' +
+                    '<button name="test" string="Mark Won" type="object" class="o_wow"/>' +
+                '</form>',
+            intercepts: {
+                execute_action: function (event) {
+                    if (clickCount === 0) {
+                        event.data.on_success();
+                    } else {
+                        event.data.on_fail();
+                    }
+                    clickCount++;
+                },
+                show_wow: function () {
+                    assert.step('wow');
+                },
+            },
+        });
+
+        form.$('button.o_wow').click();
+        assert.verifySteps(['wow']);
+        form.$('button.o_wow').click();
+        assert.verifySteps(['wow']);
+
+        form.destroy();
+    });
 });
 });