what do you hate about a guy/girl ?

I hate guys who are too cocky for their own good, or ones who try too hard to impress a girl. There's this one guy in my class who isn't of Latino/Spanish origin and speaks spanish to all the Latino girls in school. Thing is, only one of them is impressed because she's ditzy as all out doors, the rest are annoyed. One of my friends was ranting to me about it saying, "I turned him down. It's like, why is he speaking to me in Spanish when I speak English? I'm American. Speak to me in English if you want to flirt. Does he think he's impressing me? His Spanish is not even that good, but either way, I still wouldn't be impressed." I didn't even notice that about him, until she pointed it out, and it is literally the most irratating thing to listen to in class.

As far as girls go, I just don't like girls who are ditzy, or try too hard to get you to like them. It's flattering at first, but after awhile, it's gets old. This one girl who likes(?) me always asks me to hang out with her when I'm not working. She's like, "Let's watch Anime together!" and I say, "Uh... okay. Are you doing anything after school?" She says no and asks me to text her when I'm ready. I text her and tell her to come down to the lab, and she's like, "I decided I'm going to go smoke with some friends." I brush it off, and then we get back in class the next morning and she says to me, "WE NEVER HANG OUT ANYMORE BECAUSE YOU'RE ALWAYS WORKING!" I just stare at her for a few seconds, and then look back at my PC monitor. I don't even want to hear it. Literally the most irratating girl I've ever had to deal with, but I did like her at some point, but then she pulls that crap and I'm reminded of why I don't like her.

That or she's like, "Oh! You should let me watch you play games some day." or "Hey, we should play a game together! "
Me: "Sure..." I'm not looking forward to it.
Her: "Why are you being like that?"
Me: ...

So of course, when I get ready to do what she wants to do with me, she's like, "Yeah... I needed a cigarette. Sorry."

It's like, she wants me to like her and stuff, but she does things that make me feel the opposite. It's to the point where I don't even want to be her friend. She usually only talks to me when she needs something or she wants me to do something for her. She tries to butter me up, but I don't fall for that shit.

Yesterday she texted me and asked me why I was being so distant with her, but then asked me if I had the charger to the DS I gave her. I told her to come up to my room and get it, but I felt like she could have just straight up asked for the charger because I did forget to give it her. I don't know... I just feel like most girls use me, so I'm just done with being nice to people :V

TL;DR: I hate guys who try too hard. I hate girls who are ditzy and also try too hard, or blow off plans to slowly kill themselves. Also, like, like, like, like, like, like, like, like, like. 

I second that. There's nothing that gets under my skin more than a girl or guy who acts like they're superior to you, particularly when it come to intelligence.
People who mess with you are annoying too... like one second they'll be joking around and the next, they're pissed. Definitely stressful.

I'd have to go with acting superior because those kids are in your face about it, while kids who act stupid don't make it that big a deal...from my experience, at least.

@zero I second that too. I hate how someone tries to sound so cool by using 'foreign' and 'super cool' words... except they aren't. I'm SICK of finnish girls who say Ewww to stuff instead of traditional finnish word, yäk. For a time it was difficult for me to pinpoint why exactly, but I've realized few things. Ewww ends in such a manner that it can be prolonged forever and it sounds awfully whiny while yäk ends in k which makes it more effective. (If you want, I can make a clip of me spelling yäk)

Also, other thing that I hate: Those super fragile fine princess glassdoll ladies!
When a girl simply can't keep up and reqcuires special treatment or complete change in personality from those around her and is just broken from everything I don't even do, I feel very uneasy. You see, I got a friend like that. There was a time when she used to just talk to me sometimes and just break and break and break over everything. For example me not using a smiley when telling good night when it was late and I didn't feel like smiling. Or me saying that her piece of writing was really good but 'end of the world' is overly used theme and her skill would've been better received with different kind of story. Or when she comes to my house when I'm playing cards with some guys. I asked if she would join the game. She said no and I asked why. Then she turned away, and while I quited the game and sorted my cards into decks, went to the first floor. When I went there, she was in agony, and it went on for about an hour.

*metaphor*
I believe that whoever comes to another's tower has to fit in, instead tower fitting onto them. Sure, I can hold the door open but I'm not going to rebuild the tower for one guest. They can build their own.
*metaphor end*

@arkan: I have been called sucky no-life for only knowing how to draw and reading so much books and not cursing. Take a look at the guy/girl. Aren't they worth a good laugh? I get that it's harder if they are personally close but if not, treat them as a kindergartener.