Full moon a risin........

It is really true that when a full moon is near, people get even weirder. Working retail exposes you to some truly "interesting" people...

"Can you help me find a refill for my pen?". "Sure....do you have it with you?" "No, but it looks like a silver pen that writes black".... errrrrrr "Here's allllll the refills, maybe you'll see one you recognize! Have a good day"...

That sort of conversation :). I wonder if any studies have been done to lend a scientific credence to this observation?