What useless study (research) do you know about?

I just heard of a study that was performed to see what are the effects of womans tears to a mans libido. Apparently there are chemicals released in tears that can turn a guy off. Really who cares. And if it worked so well than all a woman had to do during a rape is cry, but I’m sure that doesn’t work. This isn’t the first time I’ve heard of a wasteful study being performed but no other comes to mind right now. So if you know of such a study; please share and let me know what was their outcome.