MenInTights
not a plastic bag
When I was in school the appendix and the tail bone were offered as proof of evolution because they are both useless parts of the body. Since then, the tailbone has been proven to be useful and now the appendix has been found to not be a worthless organ left over from hundreds of thousand years ago.
The Appendix: Useful and in Fact Promising - US News and World Report
The Appendix: Useful and in Fact Promising - US News and World Report