As silly as it sounds, it is a subculture within the gay culture, just as 'conversion' parties are, where gay men have sex with several HIV positive men in hopes of actually contracting the disease. I am not making this up.
I once saw a expose (pardon the use of the word) about these "conversion" parties.
These poor, disturbed, pathetic creatures actually did seek out HIV positive men with whom to have an encounter.
The HIV positive men who were sought after were said to have "the gift".
I got the sense they wanted to become martyrs for the cause of homosexuality and AIDS. Sad, very sad.