Since months, I published on this website a Post about Giles Brindley, a British man Physiologist, musicologist and composer. He in a urology conference in Las Vegas undressed from the waist down and showed the audience his huge erect penis, his penis was very thin and very long too. Long before this conference, long before, he was already experimenting with substances he injected into his own penis to achieve an instant erection. My question is: 1 .- What are the substances used in their experiments would Giles (name of each)?. 2 .- These substances may have been the cause he had that penis so long?.