Why does the skin on my penis heal faster than any other skin on my body?

Y’know, I’ve been wondering this for a while. I frequently get a variety of sores n scabs on my winky because I have a terrible Benadryl addiction that greatly enhances edging for literally like twelve, fifteen hours at a time, both because the anticholinergic properties of diphenhydramine magnifies the feeling by several orders of magnitude and the delirium makes delving deep into the unfathomably depraved shit I think about a fun romp in a chthonic wonderland where I am masticated on the cross by incubi, succubi, and transcubi that resemble a enjoyous menagerie of holy sexual flesh stitchtachiously merged in decrepit, infernal, festering fashion with egregious daemonic abominations, to resemble some Freddy Krueger bulbous scrotum phantasmagoria masterpieces that remind me of my sister’s feet.

But what I’m saying is, these little friction blisters, y’know, they’re usually on the right side of my shaft, right underneath my glans because of how I hold my rigid johnson, and they’re painful as all fuck, but I push through it because, y’know, addiction, but even so, like two-three days later my hamcandle is back to factory settings. Meanwhile, I got a scrape on my knee that happened a week n a half ago whilst on my bike cuz I got distracted by the kids on the playground, and that ish is still scabby as all hell. What gives?