Even if you picked at your oral herpes lesion and then intentionally scratched your penis and massaged the scratch with oral herpes secretions, you probably could not infect yourself. Autoinoculation is almost entirely limited to the first episode of an HSV infection, before the immune system has built up defences.
So your concluding sentence is exactly right. Common-sense hygiene is, well, common sense; but even if you didn't wash etc, the chance of autoinoculation of HSV-1 to your genitals through masturbation is very close to zero.
Good luck-- HHH, MD
Thanks Doctor. So no need to tell any future partners about my genitals "may" been exposed to HSV-1 via my hand?
I know I'm overreacting but just want to make sure.
Of course not. If you can't transfer infection to your penis, you can't transmit infection from your penis. Common sense--and yes, you are overreacting.