I doubt they'd be that selective during their orgy, nor do I believe there would be any easy way to detect it in realtime. I think the only thing one could say is it is easier for them to digest any simple sugars than any of the more complex ones, so those would be converted first (possibly) because of the body is digesting the others longer than the simple ones are going to be "peed" out first.
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Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman
I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew