What's a good way to convince my wife to do... another guy? I've always wanted to watch hre get pumped by someone else.

put one of those extension sleaves on your junk and turn off the lights

do you watch porn together? Or talk dirty during sex? Or write out fantasies? The most useful (although no garantees of course) approach for me has been to bring up my interest casually in one of the above time of situations, IN CONTEXT, keep it brief, "wow, that is hot when ____ does ____!" And then drop the subject. For weeks even. You can't really "convince" someone to do something. They have to convince themselves. If she it at all interested, it will maybe *might* plant the seed of an idea for her to mull over. And other brief nudges during sexy play between you folks might over time, go in that direction. It might take months. It might never happen. Has to be at her pace and her interest in changing behaviors to have a chance of working. If she isnt interested or maybe only therorectiy somewhat, too pushy an approach tends to backfire and make folks dig in their heels. And even if this approach works, it takes tons longer than the "slow but steady" approach. What kind of kinky or adventurous stuff do you do already? Otherwise, start here with mild stuff and gradually add new stuff. *The above is all my opinion. Your milage may vary*