This is a song about "Mean nigga"

It's all good, finna dog that

And i mean it (and i mean it)

Don't mean i cant be unkind

Their sayin on my mind

It's roc nation, this my team

Only if ya know what i mean

Starin at the wall, heard a scream

Rubber sleeves, if you know what i mean?

I'm hella mean, i'm paula deen,

Cause no man's eyes should see what i've seen

Yeah fuck you he was so mean

I see a young teen

You mean the world to me,

I was wondering maybe

Then keep your change like an oink machine

Whats non compos mentis mean?