So, among all of us here at SDMB we can’t stand 95% of people. 
I’m pretty easy-going, but there are a couple of people who have promoted themselves to arch-nemesis status. This is usually accomplished, in part, through a combination of personality quirks. What really pushes it over the edge is when nobody else seems to see that person’s inherent nemesis-ness.
Any one quirk I can usually let slide, though.
Well, we’ve already established in that other thread that we have at least one common interest. 
LOL! That’s the gay community for you: harmony via umpty.
The attitude I cannot bear is greediness, stingyness, and more generally people too concerned for my taste with money, especially when it’s related in any way with relationships (I particularily despise people who take into account their “potential SO” income/wealth).
Close second is arrogance.
I’ve also a hard time dealing with quick tempered people. I’m extremely rarely angry (maybe once every other year) so, I just can’t understand people who fly into a rage for non highly important issues. Though I had the chance not to be involved frequently with many such people (with unfortunately the exception of a former boss).
Finally, I find touchy people difficult to deal with. Especially since I tend to be a little too much straightforward for my part. However, being touchy is mainly an annoyance for the person itself, and only occassionnaly and secondarily to me.
Oh! And there’s jealousy, too…But as long as I’m not myself romantically inolved with the person…
Oooh! I just thought of one. Guys who act all tough and tell you to hit them as hard as you can, “C’mon little lady, I can take it”, and then you do, and they get MAD at you! 
I thought that this was happening only in comedy movies…
People who let things build up inside themselves until they explode at something small and you’re left wondering what the heck was so irritating or worthy of their anger. And then when they explain, you just think, “Why didn’t you bring it up when the first thing bothered you?”
Like others have said, people that live to argue. I’ve known people who will make an argument out of anything just to appear intelligent. Nothing can be simple, everything has to be convoluted. It gets to the point where I just won’t say anything in their presence.
People who ask about the amount of money others make. Someone asked my mother that the other day out of the blue and I was just flabbergasted. Why do you need to know that?!
People who don’t know when something ceases to be funny. I had a friend in high school like this. He’d stare, and stare, and stare at you, and at first you’d laugh a little uncomfortably, and then he’d just keep staring, and he wouldn’t stop until something forced him to, like the bell ringing for class to begin. He’d take pretty much anything to this level, or repeat something until it was nothing but grating.
Those who use offensive/racist terms and then insist, “Well, I’m not serious! Relax!” if you so much as look at them oddly for it.
People like my Anthropology professor this semester who start out trying to make a point, but let what they’re saying become so convoluted and difficult that by the end you have no idea what they meant. Bad thing is, his tests are like this, too.
Inviters annoy me. They are the people who, two minutes after you’ve walked into the room and said “hello” to them, are inviting you to a party at their house TONIGHT. Or ask if you want to go kayaking tomorrow. Or if you’re going to the same event, they’ll ask if you want to ride together and go get drinks afterwards. And they aren’t really a friend, just someone you work with.
I don’t know why this bothers me. Maybe it’s because I don’t like unexpected changes to my routine and plans. Also, the invitation always puts me on the spot. If I say “no”, then I will feel mean and unsocial. But if I say reluctantly say “yes” and end up regretting it later, then it will be my fault for being such a push-over. Also, I often end up wondering what the inviter is getting out of their frequent invitations. Are they showing off or something? I know, my hatred is strange.
Another pet peeve: People who lack compassion. I’m not talking about mean people–some of the nicest people I’ve met often lack compassion. These are people who will talk about how a “dumbass” got in an accident on the Turnpike, as if accidents never happen to intelligent people. If someone in the office does something that occurs a million times during the day, like lose a key, jam the copier, or accidently delete a file, they will broadcast the “incident” and proclaim loudly that, “That’s never happened to me!” As if they are above making simple mistakes.
Nosy people. You don’t need to know what I’m writing or what I’m doing, especially if what I’m doing has nothing to do with you.
I have a low tolerance for people who use metaphorical references to testicles when attempting to relate to women the concept of increasing their strength, courage and power.
I can’t stand people that get violent went angry, or who lose it and start yelling without a good reason, just like half the other posters said. The other thing I can’t stand is people that martyr themselves for others situtation, not even misfortunes. This in a nutshell sums up my old roommate. It pissed me off so, SO, much when she would take the “plight” of homosexuals as her own personal cross. This drove me nuts because she’s straight and I’m, well, not. It’s like stop using my life as your victimhood. I don’t feel like I’m a victim or a martyr because I like girls as well as boys. I don’t need or want your pity. Argh!
Shit talkers, back stabbers, dishers of mutual acquaintances. What goes around comes around.
Pretentious petty academics or artists who can’t stop using $10 words for two-bit thoughts.
Corporate tools. Nice neat young(ish) people who haven’t a thought in their heads that wasn’t placed there by an employer or peer group.
Debunkers. I mean the kind who have to rank down anything someone else likes, ie: music, movies, drinks, cities, etc. I’d call them snobs, but some of them are actually quite laidback and unpretentious when not debunking. I notice a lot of them are into jazz (as I am). Some jazz fans debunk almost as if it’s a public service: “Player X [is just a copyist/past his prime/hasn’t the musicianship God gave dirt]. You want the real stuff, check out Player Y.”
Attention vampires. The folks who are clueless enough to just never stop fucking talking and yet devious enough that only outright rudeness on your part will drive them away, thereby making it your fault that you can’t stand their behavior.
I could go on…
I agree. They aren’t fun to be around with because they’re always disparaging your tastes.
I don’t have a problem with people having their own preference, but just because you don’t like something doesn’t mean it’s inferior. Debunkers need to learn how to say, “I don’t like that” and just leave it as that.
This is a good one. Especially if they start out like, “So, what are you doing this weekend?” Then you don’t know what times your lie has to cover or how extreme it has to be.
Then my work here is done. 
Lately my pet peeve is people who don’t follow through. I know everyone is busy, but if you say you are going to do something, do it. I understand an occasional emergency but if you never had any intention of doing it in the first place then don’t say you are!
All the people who have said martyrs, I second that one too. I guess over all I just hate people who don’t seem genuine to me. I hate insincerity, and people who aren’t trustworthy, and people who are just out for attention.
Gah, I usually can get along with just about anyone, but I swear lately people are getting on my nerves more than usual. Maybe it’s time for a change on my part.
Friends who are completely dependent on you, who call you ALL the time and get pissed off when you don’t respond but the only reason you don’t respond is because you don’t feel like talking for 2 fricken hours.
Also I hate people who are extremely friendly one day and the next day act like you don’t even exist and ignore you.
I think I have a friend who is both of those combined. The kicker is that he is naive about it, because he still has feelings for her (they used to be together). I would have long arguments on the phone with him, trying to explain that all the misery she has endured was in at least SOME PART due to decisions she made.
People with double standards.
Any other personality quirk, when not combined with this, I can take (generally). For example, I have a friend who is habitually late. Thirty, forty minutes easy, each time. He loses track of time, wants to be a good guy, promises big, etc. but just can’t seem to make it. However, he would never be the slightest bit put out if anyone were late, early, underdressed, overdressed, or anything else at an event he was arranging. So while I might be a little irritated waiting for him on occasion, I know he’d do the same for me.
On the OTHER hand, there is a friend of a friend who has very much of a “rogue” personality. He used to wear a limo driver’s uniform to sneak into concerts. He used a metal detector to find the medallion at the Twin Cities winter carnival (you were supposed to interpret the clues). He generally wants to get something for nothing, and through fast talk and a general disregard for rules, generally does. I don’t necessarily have a big problem with this way of thinking; I mean, I don’t do it, but if someone’s a clown and wants to do risky, unethical, but mostly harmless things, that’s all right with me. But he’s an insufferable moralist as well. Someone lives together before marriage? Fornicators, and they’re going to hell. Someone votes Democrat? Moron, moral relativist, and subhuman. Someone suggests that something might not be entirely fair? Crybaby, sore loser, unAmerican jackass. I can’t abide him-- he’s the absolute nadir of personality traits as far as I’m concerned.
They get to feel generous and friendly, yet reasonably secure that you won’t be able to accept - it being, after all, on super short notice. This makes it easy for them to feel they’ve “invited everybody.”
Then again, if it were someone you knew better, they might just be betraying that they didn’t like you very much…:rolleyes:
I have a pal who lives in New York City. I live just outside. He ONLY EVER invites me to things on the day before, or the day of. Rather than any unspoken animus, I choose to chalk it up to his New Yorko-centric world view. He probably doesn’t even think of me until he’s been thru everyone in town.
Interrupters - What makes them feel what they have to say is so important and why a person talking is of no consequence is beyond me. That’s just plain rude.
Meeting brownnosers - Love the sound of their own voice and drag out meetings making inane points just in order to be noticed.