I did it with every single one, and it was totally natural. I couldn’t figure it out because his dick at first was soft & the foreskin was all the way over it. Porn video But one I remember, and liked to do with a different boy, happened when we discovered a plastic tube, sorta like a toilet paper roll center but smaller, and tried putting our dicks inside, one of us in each end. His dick remained the only uncircumcised one I saw for many years. I never thought twice about it, it just felt good, was fun so why not. We didn’t penetrate each other then, and I think it was mostly a visual thing, and touching. But then we discovered how good it felt when our dicks and balls
