I was invited to a photoshoot by a famous photographer my wife had worked with. The set was noisy, and it seemed a male model was unable to participate due to illness... My wife egged me on, and I was suddenly asked to fill in. With such a sexy, beautiful, big-breasted model so close, there was no way my erection would subside... "If you're so curious... why don't you just give me a quick jerk..."