Ugh...I'd imagine this thread was a joke, but unfortunately it doesn't seem that way.
You'll have to pardon my inference and my intrusion, but I'm guessing from Adnan's moniker (who started this thread) that he's a muslim. I could be wrong, of course - maybe he's an atavistic yogist, but I kind of doubt that.
Basically, this "Christian cannibal" thing is an old muslim prejudice against Christians, who are called either "kufr" (infidels) or occasionally "naij" (unclean) in the islamic system. I'm imagining that the post was designed as a troll-run by the insigator for the purpose of "da'wa" (prosetylization/preaching) and more generally for slander against those who from the islamic point of view accuse Christians of "shirk" (setting up equals with this 'allah'). This is an old story I've seen around on different sites, including an islamic supremacist site running out of Pakistan. You wouldn't believe the kind of things they accused Christians of, to say nothing of Jews.
Even though I'm a secularist, I can say pretty categorically that Christians are NOT committing cannibalism in celebration of their Eucharist, for those that are doing so. Show me how the wine and biscuit actually get converted to blood and flesh and I might believe it. LOL
So, anyway, a word of caution - be wary about threads like these.
Geoff