Question: Would a man who isn't familiar with gay subculture, but who has known and worked with some (fairly closeted) homosexual men, be likely to have a concept of bisexuality as differentiated from homosexuality? Or would he be more likely to consider any man who's had sex with men a homo/queer/fag/insert-slur-here (we're talking about the Comedian here, can you tell?), even if he knows said man has also had relationships with women?
As a follow-up question, if you think it plausible that he might make a distinction between gay and bi, what term would he be likely to use for a male bisexual? Some possible options: AC/DC, 'swings both ways', 'switch-hitter' - but I don't know how current or well-known any of those would have been in the mid-1960s. (I recall that AC/DC was used in LA Confidential, but I don't want to base my decision on another movie ;) Any other contemporary slang terms I'm overlooking?
Terms searched include combinations of bisexual, history, and slang, but I couldn't turn up how well-known any of these concepts/terms would have been outside of the subculture at that time period.
ETA: Thanks for all the comments! I think I've got enough to go on now.