Someone who has recently joined facebook. In addition to having the normal ignorance pertaining to a facebook noob, those with this syndrome are prone to constantly commenting on many posts and also posting pointless things.

It does takes a while for this condition to fade away, but it almost always does as the new users realize that nobody else comments or cares. Some people still have facebook noob syndrome even after years of using the site. In this case, they have terminal noob syndrome.
Person 1: Oh my gosh, Austin has only been on facebook for two days and I've already seen at least fifty comments from him.
Person 2: I know! It's so annoying. He has a bad case of facebook noob syndrome!
by notmonday November 4, 2011
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