I don't go around bragging about it. I will tell people if it's appropriate to the situation or conversation. I wasn't raised in it.
When I run into JWs, I don't tell them I was a JW. If it comes up, I will tell them truthfully that my sister and brother are JWs, so I know about the KH, conventions, etc.
I recently made a comment on a facebook page for the town where I raised my children. I noticed a brother I knew in the congregation. Without thinking, I said to him that I didn't realize he was 9 years older than I. Then I thought, man, I better remove the Christmas profile picture and cover picture from my fb before he sees them. A couple of hours later, I got the kindest, sweetest e-mail from him. We exchanged some messages where he told me about his health and his family. He had been a ministerial servant back in the 1980s. I could tell he was still active, probably an elder by now. I realized I must not have been disfellowshipped or announced, or he would not have responded and been so genuinely kind and glad to see me. That is the first time I have spoken to any JWs from that congregation, my last congregation, since 1999. Even then, I had been inactive since 1991.