Black stereotype of the male genitalia... is too funny to me. I use to worry about it in my younger (teen) days. I'm a white male who dated and had several Black Girlfriends for the last 20(+) years. And they simple say it's a MYTH, most Black men they were with are just average size erect. It's the ones who never had sex outside of their race think all black-men are hung. The adult entertainment industry really play into the bigger is better mentality and warp the mind of the viewer(s). If you look at adult entertainment in the 70-80s most the men were average size with a few exceptions. Today's adult entertainment average-size is 8+ inches looking with the trick lens, angles and prosthetics. It's survey proven most Black-men Flaccid is larger than White-men.
Imagine if men had to wear their cock on their chest for the world to judge you on size like woman are judge by breast size... ? Most men would be wearing some extremely baggy shirts.
I feel for the Black-man psyche who doesn't live up to the MYTH.