Should i discipline my little brother ?

My little brother is a relly bad boy, he hits, bits, insult me and my Sister, he broke my Phone yesterday, i can't support him any more i tryed every thing whith him (when i take away his toys he start hitting me, i tryed to make him sit in a corner for punishment but he don't liste..) nothing works with... show more My little brother is a relly bad boy, he hits, bits, insult me and my Sister, he broke my Phone yesterday, i can't support him any more i tryed every thing whith him (when i take away his toys he start hitting me, i tryed to make him sit in a corner for punishment but he don't liste..) nothing works with him, and i'm his baby-sitter almost all the time, my Mom gave me permition to discipline him when she's not around whenever He needs a spanking, what should i do ? And how do i discipline him in an appropriat way ? (he is 6 and i am 20)
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