Mentally Hilarious, I have to admit I'm confused about your comment. When I first read it, I interpreted your first sentence as meaning "Saying that you 'disagree' with people being gay [homosexual rather than heterosexual] is like saying you 'disagree' with people having blue eyes." If that's what you meant, I wholeheartedly agree, but be careful - that's a touchy subject around here. And regardless, calling people ignorant is borderline.
But on a second reading, the first sentence could be seen as using gay as a synonym for "bad, stupid, etc". If that's the case, then like Bresslol said, that's really ~not~ cool.
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Oi, Bresslol, you're not supposed to tell them we have a slurpee machine...