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The current colloquial use of meta is a bit hard to pin down with a definition — it doesn’t entirely fit the concept of self-reference. It’s probably better illustrated by a couple of examples. There are lots of old jokes that begin:

An Englishman, an Irishman and a Scotsman walk into a bar…

and go on to tell some story where the three people each do something (order a sandwich, perhaps) and behave in stereotyped ways (the Englishman snobbish, the Scot stingy, the Irishman stupid). These are simple jokes: jokes about certain national stereotypes.

But there’s also the joke:

An Englishman, an Irishman and a Scotsman walk into a bar. The barman says “Is this some kind of joke?”

This joke is meta. The humour comes from the barman recognising that he’s in a situation typical of jokes. It isn’t a joke about national stereotypes; it’s a joke about jokes.

Similarly, english.stackexchange.com is a Q&A site for discussing English; meta.english.stackexchange.com is a Q&A site for discussing a Q&A site for discussing English.

(I can’t speak for 10-year-olds; I’m a bit out of touch with current playground slang. But this is how it’s used in current internet slang, and the way a 10-year-old is using it will probably be reasonably closely derived from that.)

Meta as a prefix can be thought of as one level of abstraction higher: metadata is data about the main data.

If we're talking about digital photos, the data is the photograph itself, and metadata is extra information about the picture data, such as the time the photo was taken, whether the flash was used, orientation, camera make and model, GPS location, etc.

Now, the slang non-prefix word isn't so different. Urban Dictionary is full of slang (and be warned, a lot of swearwords) that's been defined by "the kids", and voted on a bit like here. Their top definition for meta is:

A term, especially in art, used to characterize something that is characteristically self-referential.
"So I just saw this film about these people making a movie, and the movie they were making was about the film industry..."

"Dude, that's so meta. Stop before my brain explodes."

So this is similarly one level of abstraction up, something about something else.

Title text: ""This is the reference implementation of the self-referential joke.""

Meta

The source of this answer contains three links to http://xkcd.com/917/: this one, the one before, and the one before the one before the latter one mentioned in this sentence.

</meta>

Another picture worth a thousand words:

Title text: "The contents of any one panel are dependent on the contents of every panel including itself. The graph of panel dependencies is complete and bidirectional, and each node has a loop. The mouseover text has two hundred and forty-two characters."

Basically, for something to be 'meta' in [common] usage, it must satisfy at least one of the following conditions:

• It is self referential.


• It is recursive.


• It is about something.

With all due respect to the previously accepted sophisticated answer, which is correct as far as the original English language is concerned but incorrect as the answer to this specific question, I strongly believe that the average 10-years-old has absolutely no idea what any of that is, in the answer, and is using the word in an evolved manner that has nothing to do with the original English language.

A 10-year-old, and even teenagers nowadays, most commonly use the word “meta” to describe something that's awesome or ... “uber”, which is perhaps an outdated synonym, or even “OP”, which is short for overpowered. OP, and even the word “broken”, originally referred to game skills/spells, game characters/heroes, which the gaming community believed to be incorrectly programmed (“broken”) in a way that made them overpowered, or so good that they imbalanced the game. However, as games started to become more and more actually balanced, and the gaming community also realized that they are as balanced as possible, the terms OP and broken weren't that accepted anymore. A new term had to be invented. Meta is that word.

Meta, for kids and teenagers, and even for adults involved in the gaming scene (video and computer games), is an acronym for “Most Effective Tactic Available”, and the term started in games and the gaming scene to refer to the best things, tactics, skills, or characters to use to win the game. However, as it became more and more commonly used, it moved from the gaming community to young people generally, and it is sometimes now used instead of “awesome” or “uber”. As desirable as it is to think that our kids and teenagers are using “self-referential” terms, I really believe that this is actually your right answer. Check it with your kid and many other kids. Meta is the new awesome.

In short, when a young person says “meta”, they mean “awesome”. And the term is an acronym for “Most Effective Tactic Available”.

Meta is, as best as I can describe it, data about data.

So if the data you are concerned with is say, the name of a person, any additional data related to that data is meta-data.

Main Data: Person's name.

Meta Data: Origin of name.

Meta Data: Name meaning.

Meta Data: Derivations of name.

In more colloquial use, as your son uses it, it somewhat loses its definition. Basically you are referencing a subject with the same subject.

A book about a book would be said to be meta.

Playing a racing game on a smartphone while you're in a car would be said to be meta.

As already stated, meta is "something that references something of the same type", e.g. metaliterature is literature about literature, metadiscussion is a discussion about a discussion.

In terms of teenagers, it is often an equivalent for "abstract". By defining it as "meta", teenagers want to express that you should come to the point and don't circle around what you really want to say. I.e. you should be concrete.

For example:

• Person: "He just lost a vuluable asset with regard to his
  travelling efforts".


• Teenager: "Wow wow, too meta dude!"


• Person: "I mean: His bike got stolen!"

My strongest guess is that the little one means the kind of state OP is now in. OP, your predicament is meta, by that logic of slang.

What meta means is meta to the OP.