For all the pregnant ladies out there
and for their friends who will very likely pester them with
"Have you had the baby yet?"
"Aren't you past due??!"
"I thought you said the due date was ____."
"My God are you still pregnant!?" ETC
http://www.associatedcontent.com/article/1047180/the_lie_of_the_edd_why_your_due_date.html?cat=25