One that's rare. At least, to me.
It's nothing you can see
Because it's deep inside all of us
But to me, it's an absolute must

Now I don't ****** anyone
To get my kicks and my fun
I don't open them up with a slice
Because this doesn't require the taking of a life

If you wonder how I get it
Let me go on and chat-chit
I'm incapable of production of this substance
So every now and then I do my stunts and hunts

Actually my supplier kind of gives it to me
His name's David, has a PhD
He hands me the bottle of the pills
So I can take them, and get my fills

The pills are a gateway to the drug
That I lack but especially love
It takes long to kick in
But it also let's me once more grin

I'm addicted to a drug
That makes me feel snug
Its name is serotonin
And it just gets me going