vein in the brain

I’ve got this vein right in my brain
 
It goes straight down drives me insane.
 
At times its thick and somewhat hard
 
When I stroke it, it spews like lard.
 
I think of girls and sexy holes
 
It gets so hot like cinders and coals.
 
Many a times they’ve tried to bend
 
But not always it goes as planned.
 
The one good thing and instant pleasure
 
When its so hard releases pressure.
 
You can lay it anywhere you want
 
And all your places will surely haunt.