Commenting on a friend's dick

It's an odd thing that we can feel so inhibited when we see a friend's equipment and want to comment on it but fear of retribution is so high. Luckily, I went swimming with a good work colleague a few years ago and we had to share a changing cubicle. I just commented on his long foreskin and he was happy to demonstrate pulling it back to expose his helmet. His comments were on size of my bollocks. It was funny and horny in a bonding kind of way. Meant that we had taken a first step and when we were drinking a couple of weeks later at a stay over work seminar, it was not difficult to end up back in his room, naked and wanking to porn. Often repeated since with no strings. But it still feels like jumping off a cliff to make the first comment..