I suspect very few westerners think of a militant Islamist group when they hear the acronym MILF, but there is in fact a group in the Philippines called the Moro Islamic Liberation Front, or MILF for short.
To be fair the group probably thought up the name before the other more well known meaning of MILF came to be. The group was formed in 1981 when some members seperated from the Moro National Liberation Front group.
I highly recommend bringing up this group in serious discussions. It is very entertaining to watch peoples reactions when you keep saying milf during a serious discussion about politics, religion, terror or other important subjects
If you try to Google MILF the first million results will be anything but the Moro Islamic Liberation Front, so here is the links to the Wikipedia page about the MILF group as well as the more popular meaning of the acronym
The group: http://en.wikipedia.org/wiki/Moro_Islamic_Liberation_Front
The other thing: http://en.wikipedia.org/wiki/MILF_(slang)