My fantasy always involved guys setting at a desktop. Not only a nice monitor view, but it would put his cock at a position that is comfortable to both of us, and allows very easy access. I would, of course, be in the kneehole on my knees.
He can start a slideshow and kick back, or view each pic individually. I would hope that he would get hard ASAP, but if he needs a little help to get there, I can do that for him. Either way, as soon as he is hard, it's going in my mouth.
An added bonus is he can lean back in the chair, and I can service his balls for him.
As he is viewing, I'd love to hear his explicit comments, asking me if I would like for him to fuck her, and other spicy talk. I'd do it complete silence as long as the opportunity is there, but I love to hear (or read) nasty comments about my wife.