My Brain is Parasitic

Whether it’s sadistic 
or masochistic 
My brain is parasitic 
my greatest critic 
yet narcissistic 
real hypocritic 

My brain is simplistic 
yet catastrophic 
it’s 100% acidic 
and described as apocalyptic 
but I’m told to stay optimistic 
so acid is simply terrific! 

My brain is fatalistic
there’s no such thing as “realistic” 
for fate is cryptic 
not moralistic