I've never directly seen another erect penis. I've been in the same room with people who were fucking or getting blown, and could kind of been aware that there were men with erect penises in my presence, but I was too busy being "entertained" myself to pay much attention to their thingies. I don't think any of them were above average though.
I had a roommate in college who was at least as big as me, flaccid, about as thick as me and maybe a bit longer, but I never saw him erect. He claimed it didn't grow much, though. Another roommate had one that appeared longer than mine, flaccid, but rather thin, I never even acknowledged that I saw his unit, much less asked him how big it was erect. My dad's flaccid member appears identical to mine in size and shape, except that he's cut and I'm intact, and his shows the effects of eighty years of gravity.
