3vil3rik's cock is the most incredible cock I've ever seen. Maybe too much incredible, or, litterally not-credible.
I honestly would believe to what he said, OR to the photo he posted, but unfortunately in my opinion it is impossibile to believe to both the things. I think, it is biologically impossible to have such a perfect erection and standing up (without hands, in some photos) cock with a 13x7 tool. We simply do not have muscles on basis of cock to support such a huge town. Also, it requires such an influx of blood and a high pression as it is impossible to achive for a human being, without having a "cock bone". I'm sure, a medical specialist can easly calculate the maximum level for prolonged deviation of blood flow that a human can support and, I think, a 13x7 cock is over this maximum level.
Maybe 13x7 cocks do exist, but not with a perfect erection. In fact, having a very big cock has a downside, the difficult to create strong erection. It is a limit due to phisiological factors.
It would be awesome if someone had succeed to overcome this biological limit, but unfortunately it is very very unlikely, closely to "impossibile".
This is only my modest opinion.