I m getting bullied, what shall I do?

there is this girl in my year and she keeps on saying nasty things to me. Her mom drives a blue fiat punto and mine drives a silver Ford Focus, and she always shouts at me and says hers is better. Also, I went to mc Donalds to get some chicken nuggets and I saw her. She pushed past me, took my chicken nuggets and threw the box at my head shouting "your a f*ck*ng t*t". I don t know what to do, I feel like it s never going to end. I shouldnt be cussed because of the car my mom drives should I?

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