A couple of years ago I hosted a guy in chastity. He sucked me for a while then we got in bed and 69'd. He had a nice cock in a cage made out of chromed steel wire. He wasn't hard and fit the cage easily. He didn't want me to touch it but was OK with my sucking his hairless balls while he sucked my cock. After a while I put a condom on and we spooned -- I find that's the easiest way for me to work the head in. I have a 7" cut cock, not very girthy, and once the head is in I'm able to fuck away. One benefit of age is that while I don't cum as much I stay hard for a long time. He was fully satisfied by the time I came.

I'd love to do that again.