<human>: Can you summarize the given text in a few sentences?

I got into an argument over her not paying me back money I lent her. During the argument she throws the food I was making in the trash, so I shove her, she grabs a knife and holds it to my face. My mom yells stop and I flip out cursing. What the fuck what the fuck. My parents start yelling at me to stop flipping out and cursing. I'm yelling she had a fucking knife to my face, why aren't you yelling at her?!  That's Ddont even acknowledge this and just keep yelling at me. What in the actual fuck... This is how I know my parents favor my sister over me. They don't give two shots about her Treatening me with a knife, they only care that I was cursing and yelling.. I'm trying to think, how is this even possible? Someone please tell me I had every right to flip out.. I feel like I'm he crazy one because of this.... What the fuck...
<bot>: my sister held a knife to my face and I get yelled at for flipping out and cursing, they don't even sat anything to her about he knife