I'm going to tell a lady to f off
What did she do to deserve that?
No, it's nothing like that. She didn't do anything wrong. Actually, she's a very nice person, but I want to insult her.
If she didn't do anything, then she doesn't deserve to be insulted. It can be very shocking and rude towards her, so why not try complimenting her instead so the both of you will feel better?
I don't want to hear something like that from you.
I'm sorry then, I'm just trying to let you know that insulting others is really hurtful, and can make you have a negative reputation.