When people seem really keen to talk to you/see you one day and then basically ignore you the next. Then they wonder why I'm distant with them. BECAUSE I DON'T KNOW WHAT THEY WANT. Argh.
Also when people beat around the bush and never quite get to the point on something fairly important and you're left scratching your head. Just say what you mean and stop using words like kinda and maybe, it's a yes or no question damn it and you brought it up in the first place!
^ yeah I've been fairly frustrated with someone lately, lol