It is possible to download funny YouTube videos by using third party websites or browser extensions. Most of these sites are legal and free to use but may sacrifice some audio or video quality during the download.
Most commonly, these websites and applications can be used by copy and pasting the URL of the YouTube video into a form on the website and then submitting it. The download should start automatically or from a link provided by the website. Some of these websites only allow the user to download the audio of the YouTube videos while others include video as well. Google Chome and Mozilla Firefox extensions such as SaveFrom give the user the ability to download the YouTube video directly from the YouTube website.