Grammar is the set of rules of language and how we use it. Correct syntax, sentence structure and punctuation are all part of grammar.

People who use correct grammar capitalize the first letter of their sentences and end sentences with a full stop. They use commas and apostrophes when they're supposed to. They write sentences which neither run on or are sentence fragments.

Apparently, being on the Internet is an automatic exemption from using grammar and spelling. It's true, ask anyone why they don't use grammar on the Internet and their reason is always "Because it's MSN/the Internet/IRC". There's no real reason to not use grammar. Grammar is out of fashion nowadays, you're more likely to be ridiculed for using correct grammar than not.
A little lesson on common grammar errors:

Your - Implies ownership, example: "Your dog" or "Your house", NOT "Your stupid".

You're - Used to describe someone when talking directly to them, usually followed by an adjective or "a/an (insert noun)", example: "You're stupid".

There - Referring to location, example: "He's over there" or "Are you there?".

Their - Implies group ownership, example: "Their house" or "Their rights".

They're - Contracted form of "they are", example: "They're quite stupid".

It's - Contracted form of "it is", example: "It's really hot outside", NOT "A cat and it's kittens".

Its - Implies non-human ownership, example: "A dog and its bone".

He's - Contracted form of "he is", example: "He's so sexy", NOT "He's hat".

His - Implies male ownership, example: "His hat", NOT "His so sexy".

by Grammar_Nazi January 21, 2008
1. a universally accepted form of writing or speaking that appropriately conveys a person's thoughts so that others may understand it.

2. a dying art.

3. not something that is readily experienced while surfing the Internet.

4. something that 99% of people in the world have no concept of.

5. a form of writing or speaking which is hard to learn and hence is ignored by the general populous.

6. a knowledge which is deeply rewarding, although not deemed important or crucial by small people.
'They're dog ways alot.' - bad grammar
by Severian_ November 23, 2006
A dead language. Often mocked and misunderstood by morons who learned it in second grade and abandoned it.
Scholar: "The quick brown fox jumps over the lazy dog."
Moron on computer: "omg u spk w/ gramr?!?!?!?!?! i thot no1 uzd it ne more!!!! wat do u uze it 4? y du u evn bothr? cuz leik no1 lieks 2 uz it cuz they r all dum!!@!! omgrotflmaocmailsxljjca2838ac83oacsmiley facecaz,s94u88447#$&@!!!!!!"
by Jason Q. Dedrickston August 19, 2005
Something that should be learnt properly before being allowed access to word definitions on Urban Dictionary. I'm sick of misused punctuation, missing capital letters and lazy spelling. If I had a red pen right now...
"Lyk do u giez no how 2 punktooate coz mie teecher says i suk @ it"
"Get out."
by Smythe August 11, 2005
The difference between knowing your shit and knowing you're shit.
Person 1: " Dude, your such an idiot when it comes to grammar".
Person 2: "*you're".
by gusllywiggum December 31, 2012
That one thing that don't get used properly or nothing like that. Many peoples do badly at grammaring. Its how sentences are supposed to sound but it isnt usually. Grammar no me. Derp.
Person 1: Hey you. You have absolutely horrible grammar.
Person 2: What you talkin bout boi? I gots tah good grammar. I done gone got me a good edumacation.
by Hawkman92 May 15, 2009
Something that isn't even used on the Internet these days. Only a small percentage of people use correct grammar on the Internet, while the rest type like this, "kan u un3rst@hn diz?". Using grammar is very easy, but some people are incapable to do that cause they are stupid.
Charley Mao: h3y wats up?

Me: Um, can you use correct grammar at least?

Me: Wow its amazing how a 20 year old types like a 3rd grader.

Charley Mao: 8(

Me: Well it's true.
by JessicaMartinezLOL August 10, 2010

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