This is a license based on the WTFPL license by Sam Hocevar. Modified for cleaner and more understandable language.
DO WHAT YOU WANT TO PUBLIC LICENSE Version 3, December 2012 Copyright (C) 2012 Devin Weaver <firstname.lastname@example.org> Everyone is permitted to copy and distribute verbatim or modified copies of this license document, and changing it is allowed as long as the name and author are changed. DO WHAT YOU WANT TO PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. You just DO WHAT YOU WANT TO. 1. Attribution is OPTIONAL, however, APPRECIATED. TERMS AND CONDITIONS FOR FITNESS FOR PURPOSE 0. USAGE of any material, in whole or in part, comes WITHOUT WARRANTY. 1. To the extent permitted by applicable law, This license offers no claim of FITNESS FOR PURPOSE.
You can download the text version.
You can also use this verbage in your source files:
This program is free software. It comes without any warranty, to the extent permitted by applicable law. You can redistribute it and/or modify it under the terms of the Do What You Want To Public License, Version 3, as published by Devin Weaver. See http://tritarget.org/wywtpl/COPYING for more details.