I'm going to call my sister a selfish piece of shit person
Why call your sister those words?
It's because she hogged the phone. I'm such a good person and she's such an asshole.
Calling your sister obscenities because of how she used the phone is rude and inappropriate behavior. You should not hurl obscenities at your family members as it is very offensive and damaging behavior.
I was lying. My sister didn't hog the phone and I was trying to turn her feelings off so I could use it.
Not only are you going to call her that, but you were also lying about the situation. You need to be more respectful of your family members.