I think you are on to something there. A couple of years ago I ran across the term "barebacking" in connection with homosexual sex. I had never heard this before but it appeared from the context in which it appeared that it is a term for unprotected anal sex among homosexual men. I did a search on the term and came up with a site that explained that not only it is indeed a term for unprotected sex but that there is a deliberate effort on the part of some homosexual men to become infected with HIV. As you state it is apparently considered by some homosexual men to be a sort of "badge of honor" to be HIV positive. It is also considered proof of their "love" for one another to engage in unprotected anal sex. "Barebacking" is apparently more common among younger homosexual men (according to what I read in my search).
Now that is sick!!!
Waiter, check please! LOL