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I have heard that priests hate doing it on the tongue because of how often those mistakes occur, lol.

Really? Haha. Maybe if everyone would kneel or something it might be better. I dunno. 😆

That's a good point, maybe. Pre- Vatican II, people used to kneel at a railing for communion.

Yeah, that's why I see some old people in line still do that. They kneel at communion but it happens rarely.