ok, done with some slight changes.
from the end bit I added

I'm gonnafistya good 'n proper you slaaaaaaag."
Suddenly, a brisk wind blew into the house, pushing the woman into me.
I said " fuck me, you're keen. Right, get on my shaft"
So she did and it fucking hurt. she had fangs like a jackal.
I said "right then, do you have any rubbers on you?"
She said " no, but I've got a pencil with an eraser on it, is that any good?"
I said " will it stop you getting pregnant?"
She said " no"
I said " ok, good, let's do it"