It’s unfortunate that guys aren’t honest about this stuff when they talk about it. My best friend and I talked about this kind of thing with each other, without having to see each other (showering in front of other guys is not something I ever did). Then again, I knew I was smaller than average, so I didn’t have to find that out the hard way (pun not intended). I think the key thing to know is that size is not as important as it’s made out to be, people exaggerate when they self-report, and most of us look kinda similar down there at the end of the day.