For the topic on that "he's uncircumcised before, then is later" the skin can just be fulled pulled back and it looks like a circumcision. It's kinda hard to do, but basically good suction mixed with pulling back.
Had it happen to me once, panicked thinking something went wrong because the skin doesn't pull back up until you're flaccid. Not sure how to explain it other than that, but it means very good head game.
Kinda like how, on very rare and VERY rough occasion, the skin "bridge" can snap if you're VERY rough pulling back. I think there's an old porn video that had that happen. It's in a vehicle.