People in the know would try to tell us that we weren't supposed to be affected by that sort of thing; it was all natural and not intended to appeal to our developing prurient interests. Wrong!
It's true, though, that as adult content became more and more accessible and professional (it doesn't take much to make it seem professional; usually it's just a higher wattage bulb), a loinclothed nomad no longer did the trick. Thus niches were born.
According to the United Nations Council on Porning, a new niche is created once every two days, up from twice weekly in 2005. A growing trend is "sub-niching", which is the division of established niches.
Thus TeenMILFs is the logical daughter of the teen niche and the MILF niche. Officially, a TeenMILF has to be an 18- or 19-year-old Mother I'd Like to Fuck, but as we have found in these virtual pages it is quite likely that the sub-niche will expand and devolve into babysitters, young-looking trophy wife stepmoms, and Moms I Don't Want to Fuck.
Statisticians at Gram Ponante Towers, Aviary, Yurt, Dojo, and Tannery predict that the TeenMILF niche will further subdivide into Asian TeenMILF, "Chocolate" TeenMILF and Plumper TeenMILF by early 2008.
Previously: All Fed Up: Oh no you didn't; Porn Review Haikus: Niche Edition (fleshbot)