I want to give my guy a blow and I really want to please him. However this is the first time anything sexual has happened between us and he is uncircumcised. I enjoy giving oral sex but have never been with a man that still had his foreskin intact. So, my question is what do I do with the foreskin exactly when giving him a bj? And during sex?
With an uncircumcised guy, you can try slipping your tongue between his foreskin and the head, that feels nice. Rather than roll the skin back with your hand (which you'd do by grasping it in the middle of the shaft and pushing/pulling in the direction of his belly) try doing it with your lips and mouth. Place one hand on the base of his penis, and then when you take him into your mouth as you apply a bit of pressure with your lips the skin will roll back. Now swirl your tongue around the exposed head, especially the "banjo string" which is the thin strip of skin connecting his foreskin to the tip of his penis.
When I was uncut, it didn't roll back fully on its own. Just take hold of his penis in sort of the middle of the shaft, and pull the skin back - the whole shaft skin + foreskin is one continuous piece of skin that is NOT attached to the penis EXCEPT at the base and just underneath the head.
I preferred it held back during oral, some guys may not, but I think that's more common.
For sex, you don't have to do anything. For most uncut guys, it will roll back and forth during sex, acting somewhat like additional lube.
Actually I never did unless asked. Besides, once a guy gets a hardon it's a problem that solves itself. But honestly folks, the first time I gave head to a guy who was uncut I wondered the same thing myself but it didn't take long to figure it out. I guess if you're a girl it may be trickier.
Just hold the penis like you would a normal one. It basically looks the same as a circumcised one. You don't have to really do much with the foreskin. It's not sensitive or anything really. But his head will be. Everything is basically the same ahough I do feel slightly more friction with an uncircumcised man.