My mom wants to kick me out for stupid reasons?

she told her friend that i got arrested for fighting my roommate which is 100% not true cuz i've never been arrested and then my friend told me about what she said. i called my mom and asked her why she said that and she yelled at me and hung up. i called her back and said lets talk about it and she said we'll talk later. i posted on fb "i dont understand the purpose of lying" she saw it and got mad and fussed at me and went off on me. i had enough of her treating me like a child so i stood up for myself and told her that im gonna speak up for myself. then i told her im an adult and she got real pissed off and said she's kicking me out my apt which she pays for and im not allowed back in her house. she lives with my grandpa so she can't kick me out. then keeps calling me telling me pack my stuff and give everything to her and if im not out by sat she's calling the police. then she kept calling me threating me. saying she's gonna come over and whoop my a s s. like i did nothing wrong and i'm getting in trouble because she lied and knows shes wrong!!!!! btw i'm 18 and i plan on going to the navy