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YouTube prompt troll

Troll other people trying to go on youtube but this pops up Made by starcodeJasonYT

// ==UserScript==
// @name         YouTube prompt troll
// @namespace    http://youtube.com/
// @version      0.2
// @description  Troll other people trying to go on youtube but this pops up Made by starcodeJasonYT
// @author       starcodeJasonYT
// @match        https://youtube.com
// @icon         https://www.google.com/s2/favicons?domain=starcodejasonyt-site.tk
// @grant        none
// ==/UserScript==
 
(function() {
    'use strict';
 
    var x
prompt("Hello what is your name before you go on youtube?")
alert("Its "-x-" right?")
})();