I think I have the perfect wife, in that I feel that I can tell her anything. So, for me - I don't have any fantasy that she isn't already aware of.
I recently had the opportunity to tell her of my membership here on the site and informed her that her picture was being viewed by millions of men, per day. I think she liked that!
I asked her to sign up for her own membership, but she has declined so far.
She has some of her own sexual fantasies that she has told me - some of which cause me to put my tail between my legs! But, I will do whatever she wishes and give her anything she wants, so long as it is legal. And, thus far, she has also agreed to the same thing in that she will do whatever I desire, again - so long as it is legal.