"filthy mind" is about everything that goes on in our minds that we wouldn't dream of saying aloud.

Love is gone
My tv's on
I'm hanging with the boys
A life with fools
This world is cruel
We never dispense with toys
Could you make a suggestion
For an act i would enjoy
I'm drowning
So come inside
Welcome to my filthy mind
My fingers are burnt
Forgot what i learnt
I'll never be a satisfied
Become a recluse
Enjoy the abuse
It's better to just get high
Now i feel like a baby
Who has just opened its eyes
I'm drowning
So come inside
Welcome to my filthy mind