Mother is throwing a tantrum?

Dinnertime, I was on my phone at the table, finishing a math problem and punching in some numbers on the calculator and my mom told me to leave the table if I wanted to play on my phone. I told her to wait just a second (It was probably more like 20 seconds, but it wasn't very long at all) and she tried to force my phone towards my face, screaming PUT IT AWAY and soiling it because she had sauce all over her hands. I got irritated, but left the table and wiped my phone off and went to my room. All the way there, my mom was screaming insults at me saying that I'm the worst child (I'm the oldest, and trust me, my other siblings aren't role models either.) and that I don't listen to anyone, that one day I was going to pay for all this. Okay, mom. Oh, and my dad was telling me I was stupid for not listening at the same time. I went to my room to unwind and then all of a sudden, my mom is wailing. She's SOBBING. There have been several instances that this has happened. I swear, one day, I'm going to write a book about how immature parents are. But She hasn't done this very recently so at first it seemed kind of foreign to me. And then my dad was in my room, screaming his head off, saying that she was going to strip my bank account of all its money and he wasn't going to do anything about it, and that no one was going to fund me through college, even though most of it is the money I've made. And all the while, my mom is having a tantrum. Is any of this justifiable? Is there possibly a reason for all of this madness? Or is my mom just going into early menopause? I mean, she's not that old, but she's really not that young either. Oh. and she just told me I'm going to be in pain one day, for all the things I'm making her suffer through. What is she suffering from? Someone please tell me. I'm thoroughly confused.