I am going to hang up on my mom on the next call.
Why are you going to hang up on your mom?
She seems to always nag me about stupid stuff.
It's not uncommon to feel annoyed with ones mother from time to time, but rather than hang up on her, you should take the time to let her know how her actions make you feel. She might not realize that her behavior could be considered nagging.
What if she calls me a slob again.
Tell her that that is not okay. You should not hang up on her, you both need to talk out your issues with one another.