My belief is that liking vanilla cake over chocolate is wrong. I know they can't help it, but I disagree with them. It's too bad they're going to burn in a lake of fire for it. I have friends who like plain white cake, don't get me wrong, but they're sinners and will regret it.
Every belief should be respected. I respect them, and deserve the same consideration in return. If a gay guy told me "you're so straight" I wouldnt take offense to it.
I completely disagree that "every belief should be respected." Just because you are free to have any belief you want, doesn't mean that some beliefs do not deserve my respect. For example, I find your belief that homosexuality is somehow objectively immoral to be absurd. I would likewise not respect the beliefs of a skinhead or KKK member that thinks white people are better than blacks and jews. Do you respect the belief of Hitler, that a certain Arian race are superior and the rest should be cleansed?
There are countless beliefs that deserve my scorn and disrespect. As for getting reported, I would not report anyone for calling something 'gay' once or twice, but I can see how that, coupled with further comments about how you think gays deserve to burn in hell eternity (I assume you didn't say this explicitly, but it is implied in your religious beliefs) could lead some to file a report.
Keep your religious beliefs to yourself when you aren't 100% sure of the audience.