These are generalizations, and do not apply to all females but I hate...
--that women criticize themselves so much. Maybe men do it just as much, but if so at least they keep it to themselves. So many women are always going on about "I want to lose weight, I need a new haircut, I hate my arms, I hate my butt, my skin is too pale, my legs are too short, blah blah blah". I do this too, and I hate that I've been taught to think this way.
--their so-called "nurturing instinct". I understand that this is a good thing in some contexts, but generally not when it's directed at me. When I'm in a bad mood, I want to be left alone. People asking me "are you ok? what happened? do you want to talk about it?" makes me want to punch them in the face. Same thing when I am just thinking and people assume there's something wrong because I'm not smiling or engaging in conversation. What is it with women and wanting to make sure other people are happy all the time?
--venting. I think I just don't like this because I'm an introvert, but apparently every woman is raised to believe that they should spill their guts to solve problems. But, are they asking me for advice? No, they just want to say it. So I feel like they could have just said it to themselves. Silently.
--we can be really mean to each other for no reason.
--women who use their period as an excuse to be unbearable. My roommate does this all the time. "Sorry I'm being a B, I'm on my period". Um, so are you on your period four weeks a month then? Seriously.
--women who are two-faced because they've been taught that as women they need to be pleasant and polite, but apparently they missed the lesson where you have to actually mean it. Oh no, that's fine, no hard feelings, I'm just going to go tell all our friends how awful you are. Besties!
Again, this is a list of some of the worst common female attributes, but it by no means applies to all women/girls, and all of these (except the second to last) apply to men as well sometimes.