Im not going to let this dirty old man win

OK so I'm not perfect
and I'm not pretty
I'm not clever
not one bit witty

I'm ugly
I'm on my own
I'm nothing good
and I'm all alone

but when i look at you
i feel ashamed
that i let you do that to me
and I'm the one
everyone blamed

well you are just a dirty old man
I'm not going to let you win
god will forgive you
but i never will forgive you from this terrible sin