Today is the 10th Anniversary of the NSFW webcomic NSFW-Comix by Cybersp0nge. He's the one that did parodies on Newgrounds such as Omega Kowai Cuthwald Song, The Ultimate Orgy, My Little Parody: Friendship With Benefits is Magic Teaser Version, and Dakimakura For Christmas. I even made a NSFW-Comix entry about its history and parodies.
If you never heard of it but wanted to check out the website, be warned that it's really NSFW due to graphical humor pornography.