Along with the above-mentioned use of tl;dr by lazy jerks and trolls, the use of this term is a great way to cut down long-winded, nonsensical arguments made by insane conspiracy theorists who are probably wearing tin-foil hats while typing them.
A phrase typed in response to a blog, forum post, or other form of online media to express either that the submission of another user was either needlessly long or wordy or that the reader has a complete lack of interest in the subject matter.
Contrary to the belief held by those who experience mild to moderate butthurt due to having made submissions that either nobody cared about enough to read or were much longer than necessary for the sole purpose of condescension or self-exaltation, replying to media with "tl;dr" does not necessarily indicate substandard intelligence or an attention deficit.
This definition is a good example of a post in which replying "tl;dr" to would be appropriate.
H.Horse: I find it hilarious that any definition of TL;DR condeming those who use it as uneducated morons, are the ones receiving more thumbs down - just like this one probably will - even though they are the most accurate. That just further proves that people - especially kids - have a consistantly dwindling attention span, most likely indirectly proportional to the amount of media and entertainment devices we feel the need to constantly plug ourselves into.
Joe: No, I'm not a moron. I'm just indicating that you're pompous and arrogant and nobody cares about your novel. Also, you spelled "condemning" and "consistently" wrong.
Despite the elitist view that this is used as a way of having to get out of reading "brilliant arguments", sometimes it does make sense. Just because something is long and drawn-out does not mean it is worth reading. I've read "walls of text" that were hollow and nothing but a waste of my time. Lots of talk, little substance. In that case, tl;dr would be more than just a response to laziness.
1. When responding as a first post, and only as a first post, on a thread, it means the OP's post was so long and unimportant or uninteresting that the user deemed it unworthy of his/her time. If the topic really is unimportant and uninteresting, and long enough to need more than a minute to be read and understood, the user ends up looking clever, though on some communities the user may end up looking like a troll or a lazy bum.
2. When responding during an already ongoing discussion where others haven't used the term, it means the user is trying to diminish the topic's importance or entertainment value, but considering that such a strategy won't work in a discussion where people are actually participating, the user ends up looking like a dipshit.
3. When responding with it during an argument, it means that the user in question wants to win the argument by stating that what the other person is saying is so worthless it's not worth reading. But by evading the argument instead of confronting it directly, it becomes obvious that the user got owned.
- someguy1: *posts a very large and boring flow chart about people in facebook*
- User: tl;dr
- others: I second that.
*on a community where users actually like these things*
- User: tl;dr
- others: If you think it's too long then GTFO, retard.
- User: tl;dr
*some ignore dipshit and continue discussion, some others tell the dipshit to GTFO, everyone will report the post to mods*
- someguy1: *totally proves that he's right and/or User is wrong*
- User: tl; dr
- others: hahah he got pwned and he's chickening out, what a pussy!
2) a phrase used when a post REALLY IS long, pointless, and repetitive, and should barely be read... but most of the time people do anyway
3) a lie
Person A: -long post about how furries aren't bad people- and that is why furries aren't bad people...
Person B: tl;dr
Person A: troll...
Person C: -long, overly repetitive post, by a furry (the bad kind)- AND THAT'S WHY FURRIES ARE TEH AWESHUMNESS, AND YOU ARE GUILTY OF FURSECUTION
Person D: tl;dr, dude I never even insulted you guys in the first place
Person C: -rages-
((i have nothing against furries))
Originally intended for when someone makes a point in an arguement/discussion and the intended target of the point cannot be bothered to read the lengthy comment. However, it has been overused and brutally raped of it's meaning due to people being incapable of responding with an intellectual/witty remark. Now most commonly means "Your arguement is so sound and accurate that I can find no flaw to point out. However I do not wish to look like an uneducated fool, and so I shall instead respond as if you are the ignorant one for posting an in depth comment of such length that it would imply too much effort to read." Ironically, a large number of people would be likely to comment TL;DR to this definition if given the opportunity, thereby showing that they fall into the category of people to whom this applies
An individual, most likely a "nerd", posts a comment of excessive length on a subject, unnecessarily expanding on points rather than getting to the point, thereby deserving of the response
Recent most common usage:
A point is made in which the commenter backs up their claims with facts and evidence, only to receive the response