Other than the genetics you're born with, I'm pretty sure only male enhancement surgery to fatten that thing up is about all you can do.
"insensitive prick!" – Danielle Algo
Carolina Reaper will definitely increase the blood flow and leave you with a throbbing rod.
=== Not ALL LIVES MATTER until BLACK LIVES MATTER ===
I’ve tried Viagra (Sildenafil). It doesn’t cause erections directly. But when I get sexually aroused, by thinking about sex, porn or my woman, after I’ve taken even half a tablet I get the most fantastic boner, every bit as good as my teens! Then when I’ve jerked my load by masturbation or sex I’m ready with another good erection almost immediately. No side effects except sometimes a slight headache next day, and once with a whole tablet I did get a boner so stiff it was almost painful and wouldn’t go down even after a wank.