I found this website quite a while ago (a couple of years, maybe?). It is a personal website for Rob Cockerham. He has quite a sense of humor and kept me entertained during many a slow day at work.
This prank is one of my favorite items on his website. Truly a masterpiece.
TGIFridays Menu Prank
If you have time, you should check out his other stuff. The sections Pranks, How Much is Inside, and Incredible Creations are my favorite.