
How can he be so rude to his mom
I could never tell my mother to shut up

Lots of factors like culture and family dynamics, not to mention language has evolved. Telling someone to shut up nowadays doesn't necessarily have to have an offensive meaning. I grew up in a very strict household, so respectful language was mandatory and parents were parents, not friends. My best friend though, has a more friendly relationship with her mum, so she speaks more candidly. She also often tells her mum to shut up when her mum tries to embarrass her, but it's said in jest and not as a serious admonition.

Haha, your friend's relationship with her mum reminds me of me and my mum! For me, it's probably because it's always just been me and her. However, she's definitely still my mum--she always scared me sh*tless when she was mad, and I never talked back when she was genuinely mad at me. She would have bitten my head off, lol!
Yo I’m scared for the uploaders