A friend from college once commented on mine in front of someone else. We had been changing at gym / after swims, so we had seen each other before, but he never made any comments to me directly. Then one time we were at a birthday party of a mutual friend with around 30 people, mostly guys. I only knew some of the guests attending. My college friend was introducing me to people, and when we got to this one dude he was close friends with from back home, he just said to me "dude, while you have a big dick, you only have the second largest at this party. This guy's (his friend) is crazy huge."
As he was saying it, me and the guy were just looking at each other, not really registering what was being said. luckily it didn't really get awkward as we were slightly drunk, I just replied "haha, being nr. two is perfectly fine with me" and proceeded to shake with the guy.
Another time as a sophomore I was at a house party with some of the incoming freshmen, and we went for a piss. there was only one toilet, so I went in with three guys I recently met. one took a leak in the sink, and the remaining three of us shared the bowl and could clearly see each others d. As we were going at it, one of them said to me "thats a fucking pipe dude!". to be fair I was bigger, but the two others weren't small.