I get upset.
That's so offensive.
offensive是“进攻的”, “进攻性的”意思，和defensive“防御的”, “防备的”是一对反义词。但是，这里的offensive是“冒犯的”，“无礼的”，“侮辱的”意思。offensiv作“进攻的”意思讲时，只在句中修饰名词。“她好像挺有进攻性的”，这句话用英文来说就是"She really seemed like an offensive girl". 但是，"She really seemed to be offensive"的意思却是“她好像很无礼”
That person is so rude.
How rude can you be?
That really makes me mad/angry/upset.
make sb mad
He drives me crazy when he does that.
drive sb mad/crazy
I'm really displeased with her behavior.
be displeased with...
She is the most unpleasant woman I've ever met.
That kind of thing really pisses me off.
piss sb off
A: What's wrong with you?
B: I dropped my sunglasses and they all got scratched up. It makes me so sad when I do that.
A: What's wrong? You don't look too happy.
B: No, I'm not.
A: Why? What happened?
B: I was talking with a customer who came into the office today. He was going to ABC University, and he made a remark about DEF University, which I went to. That really put me in a bad mood.
put sb in a bad mood
A: Try not to let it get to you. Why don't you sit down here? I'll give you a massage.