Oh, I love volunteering that kind of info.
Its just so unheard of here, as we have *the* lowest BF'ing rate in the US (I'm in Louisiana). Unfortunately, I can't say that I'm still nursing my 3.5yo, but I'd love to be able to say that I were.
So usually I use my sister as an example.
Whenever someone asks about my sister (she used to work where I work now) or brings up BF'ing, I'll somehow sneak it into the conversation that she is "still" nursing her 15mo.
Nine times out of ten, people are like "OMG, she's STILL doing that".
I do the same thing regarding circ. We have a cook at work who's brother "outed" him and his intact status. And every time someone makes a comment about "gross uncircumcised penises", I raise my eyebrows and say "uhhh, my son and my nephew both have their foreskin and that is perfectly normal". Seeing as how the south also has the highest circ rate in the US, people are quite shocked/disgusted by that too.