I manage to forget a lot of the low moments in races. I guess its a lot like childbirth - if you remembered, you'd never do it again.
One indelibly burned into my mind is the end of the North Face DC half marathon. I got a brutal case of nipple chafe around ten miles into what turned out to be a 14.3 mile hot slog. By the end of the race, I had what is commonly known as the "Sad Clown Face."
As the article says, men, don't forget you have nipples. The best remedy for a while was duct tape, but removal always ended up a lot like this.
I finally discovered Nexcare first aid tape. It stays on very well if you do your manscaping right, which means an electric, not a regular razor, please, on these parts. And it comes off nice and easy, no screaming like the duct tape.
Once, I used it to cover a blister on the back of a heel. It didn't stay as well as duct tape, but there's no hair down there so the painful removal isn't an issue.
Being summer and all, consider this a public service announcement.