its your brother being a asshole everytime, like barging into your room and beats you up for literally no reason.
Me minding my own business:
Brother: *barges in room and beats the shit out of me*

My brother can suck a left nut unless he is nice or something but in this case hes a raT

my brothers a rat. -your mom

a mybrothersarat is a sibling thats a boy, making him you brother (duhh) and he likes to annoy the shit out of u and stuff and he like calling you poopy head and mean things that make you tell mommy.
by Sally Mosshoe April 11, 2019
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