Changes Windows to Garbage, Linux to Cocaine and macOS to BabySeater xD: https://devrant.com/rants/2010343/wrote-a-js-code-for-greasemonkey-to-replace-linux-with-cocaine-download-from-htt

Reality.js

// ==UserScript==
// @name         Reality
// @description  Changes Windows to Garbage, Linux to Cocaine and macOS to BabySeater XD
// @author       KartSriv
// @match        https://google.com/*
// @grant        none
// ==/UserScript==

(function() {
  var replacements, regex, key, textnodes, node, s; 

  replacements = { 
    
    "Windows": "Garbage",
    "Linux": "Cocaine",
    "macOS": "BabySitter",
    "Google": "Bing",
    "Bing": "Google",
    "Gmail": "Bmail",
    "Creative": "Butt",
    };

regex = {}; 
for (key in replacements) { 
    regex[key] = new RegExp(key, 'g'); 
} 

textnodes = document.evaluate( "//body//text()", document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null); 

for (var i = 0; i < textnodes.snapshotLength; i++) { 
    node = textnodes.snapshotItem(i); 
    s = node.data; 
    for (key in replacements) { 
        s = s.replace(regex[key], replacements[key]); 
    } 
    node.data = s; 
} 

})();