Are anyone else’s parents just incredibly stupid??

I jgot into another argument with my mother as per usual, I don’t know if this is exclusive to narcissists because of the lies and illusions they live in to protect themselves from reality and truth…but my mom will just flat out say things that aren’t true even when I have the evidence that states the exact opposite in my hand, I swear to god this woman could say and genuinely convince herself the sky is purple. During this argument, she called me stupid, I replied “well thank god I’m not pregnant with a pedophile’s baby at 17 stupid.” Her eyes became almost demonic and lit up in anger, and she got in my face and started screaming “my *ex husband’s name* was not a peodphile!! Should I tell *her other two sons whom she smear campaigns against me with her bullshit* what you have to say??” For added context, one of her sons (my half brother, unfortunately who is a man three decades older than me.) has come over here, threatened to beat me, screamed out racial slurs at me (I’m not black??) and tried to convert me with fear that I will “burn in hell.” After a suicide attempt his own mother caused and even tried to sit my own father down and tell him how to raise his own daughter (me.) so obviously this immediately sends me straight into panic mode, I tell her that if he comes over here again threatening me I will call the police. She immediately starts calling me stupid again for even daring to call her husband (whom..is dead and remarried before he died? Never mind the fact that she’s married to my dad now but I digress.) mind you, this man was in his 20’s and my mom 17 when she got pregnant with her eldest son. She argued at me to look up the definition of a pedophile, I did and lo and behold, he fits that description to a T. She still tried to call me ignorant though, of course.