I just conducted an informal office poll amongst my three male co-workers that consisted of the following question: "If you were hanging out with some dude and he told you that he generally preferrs women but sucks dick too from time to time would you consider him gay, bi, or straight?"
Three of three respondants answered gay. I think they also suspect that I'm gay now just for asking that question. As a matter of fact, one of them just walked into my office and said, "So who's your boyfriend?" and started making sucky noises at me. He then followed up that question with "What happened, did you meet some dude and accidentally suck his dick last night?"