You know what really grinds my gears?

[Sir_Biden_XVII]

When people write their eighth-grade graduation speeches all about how they're "moving on into the real world to apply all that they've learned." Yes, I know that some of them will not go to or finish secondary school, but most of them do.

1. You still live with your parents.
2. You're just going to high school. You're not moving to Boston and becoming a chief executive of some macro-monopolistic corporation. You'll probably have to write the same speech again in four years.

When people confuse their homophones and homographs. Not only messing up when they use such words (homophones: e.g. carrot, caret, carat [also karat]; homographs: e.g. bow, sow, hail), but also confusing the terms "homophone," "homograph," and "homonym."

When someone pronounces a word so poorly that you're almost certain he/she spelled it wrong in his/her head.

The fact that so many of the replies to this topic (including mine) consist mainly or entirely of dependent clauses.

Eating at Long John Silver's and finishing my drink half an hour before we get our food.

[Sir_Biden_XVII]

The fear that I may be replying inappropriately to a topic. On that note:

the possibility that people are going to be really confused in the 3000s when we talk about 9/11 because we forgot to put the /01 after 9/11

I don't believe you thought that one through far enough. In the 3000s, there will (theoretically) be a 3001, which may be abbreviated to 01. Therefore, simply adding "/01" would do no good if you want to specify the millennium of the date.
Try "/2001". You can add an "A. D." before it if you would like, and perhaps write it in other calendar formats. (That's just there in case someone wants to get all "Well, in that case..." on me, though I now fear that I have forgotten something...)

On that note: The fear that I will be harshly reprimanded and consequently shunned if I do stray too far from the topic.

[100penguin.]

On that note, perhaps people will be confused in the year 3000 because they no longer rely on a monotheistic 3000 year old death cult and a book to guide themselves. Then the whole christian calender will look confusing. Either way, worse things have happened, do happen and will happen so I'm sure they won't think about it too much.

[AnGamer]

racism
people who are racist

[iGenerator]

Friends fighting

[Wone]

Friends fighting

Pointless fighting in general.

[iGenerator]

People who assume it's okay to ask for rides places

[Holy_Moses]

People who assume it's okay to ask for rides places

Hey bro, can you give me a ride to the mall.

[iGenerator]

People who assume it's okay to ask for rides places

Hey bro, can you give me a ride to the mall.

Get your own car

[hydrofrog]

Generalisations
[spoiler][spoiler]spoilers inside spoilers[/spoiler][/spoiler]

[Tobs]

Hairs between keyboard keys, especially if its at college or somewhere else like that...

[Wone]

Hairs between keyboard keys, especially if its at college or somewhere else like that...

I get my dandruff on my keyboard all the time.

[Dalei]

I hate it when someone says a really bad joke
I hate it when people walk so slow down a hallway and there is no way around them

[Holy_Moses]

When people honk at you the millisecond the light turns green.

[UnknownHedgehog]

Food edition:

-When the Chef Boyardee is stuck in the can and refuses to come out.
-The two pieces of Ravioli that are always stuck together in the cans.
-That Campbells wants me to burn my mouth with a microwaving time of 2:45 for soup.
-When biting into a pizza and having all the cheese slide off to burn your chin.
-Making your bowl of cereal before realizing you have no milk.
-Sitting down at the table without your drink.
-The stickiness of having sugary drinks spilled on you.
-My Burger King in town is only generous enough to give only 1 slice of cheese to their Double Whoppers.
-McDonald's doesn't serve lunch all the time.
-McDonald's aren't 24 hours anymore (at least here).
-People who grab a lot of food at buffets only to not finish most of it, and it ends up being thrown away.
-Getting the cookie too soggy in the milk to where it breaks off and falls in the milk.
-Generic brands