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Meet seven-week-old Cillian, son of Toni and Paul McCann, from Belfast.
A 23-second video of him appearing to say the word "hello" has been viewed half a million times on YouTube.
Mrs McCann told the Belfast Telegraph that since posting the video to her Facebook page, everything has "been mad".
“He hasn't said anything since but you can tell when he’s trying. When he flicks his tongue in a certain way, you know he wants to say something.”
Now we know, and knowing is half the battle.
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