<human>: Can you provide a brief overview of the text?

My parents don't realize my younger brother is a shit.  He constantly berates me and my parents for no reason, calling them and me "fucking pieces of shit" or similar names constantly, and they brush it off as "a product of his personality."

I just can't see how they could possibly consider that personality to be healthy at all.  He is emotionally draining to be around, constantly argues about unimportant stuff, and has trouble keeping friendships because he's so annoying to be around.

This has been going on for the last two or three years, and my parents always fail to blame him for his problems.

He **never** gets punished for all the shit he says and does.

How can I overcome this bullshit?

I've tried ignoring him, to no avail.  He just keeps pestering me.  Many times he tells me to kill myself, or that he wishes I were dead, but my parents never hear him say it.
<bot>: My brother is an immature, sailor-mouthed, emotionally imbalanced individual, and has been so for the last few years.  How do I overcome this relationship, whether by ignoring him, or else?