Still looking for opportunities to come out to other people in meatspace without it being awkward. I mean, I can randomly shout "I'M GAY" to the online communities I'm in and it's rather amusing, but I don't have the guts to do it in real life.
It does depend on what people are talking about, but starters here's some examples (for the examples I'm assuming that you're a bi man (I don't know if you're a man but you said you were bi in the beginning of the thread)):
If a girl says, that guy is good looking, if you agree say so, if not say who'd you prefer.
If a guy wonders why why one or many girls thinks another guy is good looking, give a list of good features of the guy, if he is interested in the girl, give him a list of features the are as good looking or more of him, if he is just curious about why people are interested you can say if you think he's good looking or if you'd prefer someone else, it is not the end of the world if you read the guy wrong about this, he won't blame you for liking the guy, if he wants a relationship with the girl however it might improve his mood to know a bit about what looks good about him though.
If you really are bi however, make that somewhat clear, say which guys and which girls are about equally pretty, beautiful or handsome once in a while, in reversed gender roles of the previous examples, still comment. Why am I saying this? Because I know how much it can hurt when you're interested in someone relatively close who thinks you're gay/straight and therefore doesn't take in to consideration that you might be interested in them. This is also why I dislike that people in sweden often say that their bi just because it is easier to come out as, it kind of messes things up for people who are living the reality of being bi, just as much as being bi and saying you're gay can lead to an overly big amount of straight people wanting to hook up with people who are explicitly gay.
It might also be a good time to get a few meatspace friends, internet friends while good can't as easily be there for you when you have difficulties with your family.
Never did come out to my family myself, not that they wouldn't accept it, I've just have had so much troubles with my family to think that they do not have the right knowing me in any way.
/Zorbeltuss