In one of my previous jobs. There are some scripts programmed by people that seems to don't know what a function is. It was a fractal of replicated if else code. Every half of the code is almost identical to the other one except for a simple things. Then if you see each half you can see the same pattern again and so on. Files like that are about 50.000 lines long. If you blame it, you see mostly the usernames of current managers. If that is not enough, it was written in perl