never saw anything but worked with an older guy who had one ball shot off in WWII. docs said probably no kids. ha! he has 3 sons. he died a few yrs back.
have a friend that seems to have had his genitalia get 'bypassed" by puberty. his balls are like marbles and his cock is the size of his little finger. I, on the other hand, have balls like jumbo size eggs and a thick cock. years and years ago, after playing basketball at the "Y" we showered. I noticed his smallness but said nothing, he noticed my largeness, and said, "gee........you're big. I'd be happy to be half your size." we never mentioned it again, but sometimes he tries to embarrass me with some smart ass comments.