Photo: Suntzulynn for LE/Corbis

The average age of an actress performing in a porn film with “MILF” in the title is 33 years old, according to an analysis of the Internet Adult Film Database by Jon Millward and picked up by Gawker today. (Jennifer Coolidge, pictured, was 38 when she played Stifler’s mom in American Pie, the role that popularized the term.) Other fun/depressing facts: The most popular role for women to play is “teen”; the most common porn star name is Nikki Lee; and porn careers have gotten shorter since the seventies, from nine years to three years for women, although the average age of a porn star’s debut has stayed constant, at about 22 years old. Most surprising is that even though porn gets blamed for some unattainably blonde and top-heavy beauty standard, in fact, the average porn star is a 34-B-cup brunette who is five foot five and 117 pounds and from California. So, like, Lizzy Caplan.