Sorry to be a downer here. Contrary to what the text on the site says, do NOT blindly copy and paste code from StackOverflow without understanding the license

Sorry to be a downer here. Contrary to what the text on the site says, do NOT blindly copy and paste code from StackOverflow without understanding the license under which its content is released. You can get yourself into hot water. Secondly, if you actually want one of these, you can find a three-key QMK-compatible keyboard PCB and do it yourself. Lots of schematics and variants exist, and they're not incredibly expensive. There's a whole scene for that type of deal. Cute joke either way, though. :)