Could that be the Priapus Shot (p-shot)?
I think he use old school viagra. Like the injectable type I think its called caverject. He injected his peen constantly & gradually increase the dose over time and also experimented w/ ALOT of other substances injected directly to his organs.
Chemical Penis Enlargement
Well it is worth noting he there is a consistent routine like jelqs, he puts dmso & paba & finally injects. I think now a days he just injects to maintain that length & girth. So meaning to maintain this girth and length he has to inject.
What I really think is that not unless you have a blood disorder like sickle cell or something your penis will go back to its normal size. This is why ppl w/ sickle are taking something to minimize its effect cause if blood were to store in the body for prolong periods of time they would cause irreparable damage.
I think I'm always fascinated by this article:
Teenager has world's first penis REDUCTION surgery | Daily Mail Online
The TLDR about this is that this teen has a blood disorder and he had infrequent bouts of priapism through out his life causing his peen to balloon 10 inches around, 7 inches in length. His peen would not shrink, just harden.
Back then it was a sign for me that this type of thing work. But now I realize the reason why its balloon in shape is because there constant blood flow issues where his peen would trap blood but not enough for it to cause necrosis.