1. Asshole cops. I got stopped by one once and called him out on his fault. Here's the scenario: I'm waiting at a red light in an intersection. A cop is on my right and he slows down because he's currently got a yellow, which is about to turn red. It turns red for him, green for me. I wait about 2 seconds, which I normally do, because people are idiots and tons of jackasses out there like to run red lights and clearly they'd crash into me if I didn't wait an extra second. So I start going, this cop turns on his lights at the same time (which, remember, is 2 seconds after it turns red for him). By the time he starts going forward, I'm practically past him and if I wanted to stop and wait for him, I'd be blocking the entire intersection AND him. So what do I do? I go ahead of him. He decides to make a quick right (I was going straight) and pull me over. He asks why I went ahead of him and didn't let him through the intersection. Uh...jackass...you clearly just didn't want to wait at the red light, and if I'd have stopped at the moment you put your lights on, you wouldn't be able to drive your car through mine. They're two solid chunks of matter. The guy looks at me, realizes he's a douche, and tells me "yeah well YOU JUST BE CAREFUL NEXT TIME PAL". Apparently I do need to be careful, because there are assholes like him that have power to abuse.
2. People that will not admit they're wrong no matter how much proof you have of it. They still just say no, because they think whatever they say is right. You could have videotape, fingerprint, eye-witness, and all the other evidence you need, plus a lie-detector, and they'd still say that none of that matters and that you should just take their word that they're right and you're wrong.
3. People that don't understand that generally speaking, an opinion is not a fact, but some opinions that are twisted to try to seem like facts can be wrong, because they're masking as facts. For instance, if I was to say "its my opinion that black is a lighter color than white"...well..no, it clearly isn't, and if you say "well its my opinion, it can't be wrong"....yes, it can, and it is. But subsequently, if I say "in my opinion, ketchup sucks", that's not a right or wrong statement. If you like ketchup, ok, but that doesn't make me wrong about it.
4. Mixed signals. Not a current gripe, but we've all dealt with them over the years. Just be honest with the people you're interested in dating, you know? Stop playing games.
5. Repetitive TV show concepts. How many lawyer/cop shows do we really need on TV? 20 different versions of Law & Order, 10 versions of CSI, and all those shows like Cold Case and Eli Stone and all that. Then there are like 30 Judge shows. There's also about 400 "20-something year old kids get drunk, argue with each other, and have sex 24/7" type of shows.
6. Some people are just way too hard to shop for when it comes to X-Mas and birthday gifts. If you don't want to give me any type of ideas, and you don't really like anything, then I should be given a bypass and I shouldn't have to buy you anything.
7. Today I wanted pepperoni & cheese stromboli, so I found it on this one pizza place's menu and ordered some of it. Well, the idiots don't know what it is, apparently, as they gave me a pepperoni, cheese, and sauce (didn't feel like eating it today) pizza TURNOVER instead of stromboli. Totally not in the mood for that today, so they ruined my dinner, and since dinner is the only meal of the day that I really eat, that means today sucked food-wise lol. You shouldn't be able to call yourself an Italian pizza place if you have no idea what the difference is between stromboli and a turnover. I bet if I ordered clams over linguini in a white sauce they'd give me fried clams over fettuccine alfredo.
8. If I hold the door open for you, which I'm not obliged to do, you should have the decency to say "thank you". If you hold the door open for me, which I don't expect you to, I always say "thank you". Another aspect is when you hold the door open for one person and like 5 people follow them and take their sweet ass time. Look, I'm being nice, but don't take advantage of it, ESPECIALLY if you're just trying to take advantage of a lazy moment and you don't say thank you on top of it.
EDIT: 9. When people ask you for your honest opinion and then tell you that you're an asshole because you didn't lie to them. If you're not prepared to hear the worse of the two choices, don't ask for the truth. Better yet, don't ask at all, because chances are, I'll tell the truth anyway if you bring the topic up.
There's a few of the things that "grind my gears". Back to you, Tom.