Bug chasing refers to a fetish where someone intentionally tries to sleep with a person infected with AIDS in an effort to contract the disease. Although there are some straight men and women who may fall into this group, the majority (by far) identify as either bi-sexual or gay. Some people admit to doing this in order to receive free government benefits. However, I think most are after some kind of "thrill" that I cannot explain. Perhaps they are sex addicts who are bored with less risky behaviors.