I stumbled across this article about the 10 Worst Evolutionary Designs, and I must admit there are some silly things.
Like for example:
6 Shark-fetus teeth. A few shark species have live births (instead of laying eggs). The Jaws juniors grow teeth in the womb. The first sibling or two to mature sometimes eat their siblings in utero. Mmm ... siblings
Well here is the link check it for yourself :)
10 Worst Evolutionary Designs