You lied for no reason at all. Ok, so your brother called and you talked to him for 2 hours. Why did you lie about this? You thought she was going to get mad for some reason. Yes, she yelled at you but she isn't mad that your brother called. She is mad that you lied.
You went to your friends. You told her that you would be back in an hour even thought she didn't ask. You come home 6 hours later. She isn't mad that you were gone for 6 hours. She is mad because you told her you would be back in an hour and she planned a special dinner for you. Next time, call and tell her that you are going to stay longer and she probably will not be mad. Or don't give her a time if she doesn't ask.
Here's just a few examples. So for you guys out there. Think before you speak and you'll likely stay out of trouble with your ladies.