I used to be friends with a group of men. At some point, the group had grown up to about 25 to 30 guys and was about 75% gay/ 25% straight. We hung out most nights together, took vacations together, etc. Some of the guys knew each other from Boy Scouts. They were joking about one of the guys (M) and referred to him as '8 Quarters'. It came out that M could lay 8 quarters end to end on his dick. Of course the gay men wanted him to prove it, so one night when M was drunk, he whipped out his dick, got it hard and laid 8 quarters on his dick. Even more impressive was the thickness of his dick. There were other times when he was drunk that he would flash his dick at people. As far as I know, he never got it hard again for a show to the group.
A few times M's brother, S would visit. One night, somebody started joking around with S and asked if he was as big as his brother. S got embarrassed easily and turned bright red. I'm pretty sure from his response that he is hung nicely just like his brother. Later that night, D, one of the gay men in the group ended up spending the night in the same bed as S. Nobody ever figured out if they had sex or not, D was a known liar, so anything he said nobody believed. The only response from S was that his face turned bright red. S came back a few more times to visit, but M made sure that the D wasn't around.