I've been sexually active since 1978, my coded age is ten years low.
That makes for 10,585 days for potential sexual activity.
I have not wasted much of that, given the ample opportunities for hooking up that gay men have carved out of an otherwise hostile society.
Over that time, I've seen one average one hard cock on another guy per day.
Mostly mutual JO but often sucking and occasional fucking.
Rarely have I gone a day without at least seeing another guy hard, and there have been many, many times when I've had many more than one hard cock per day.
So if we conservatively assume that I've seen an average 6" of boner per day over 10,585 days, that would make for 63,510 inches of man meat.
That translates into 5292.5' of erect penis which is 12.5' longer than one mile of wood.
Since I am a size queen as well as a size king, one might even bump that 6" up statistically.