The World's Worst Website Ever

Not even close. Just off the top of my head, the infamous Yvette's Bridal Formal website was easily a couple of orders of magnitude worse. I think Yvette's is gone now, but here is a mirror: https://yvettesbridalformal.p1r8.net

Even better (worse?), unlike the submitted site Yvette's was not intentionally a bad site. It was actually a serious attempt at a good site promoting their business.