I thought this was called swamp ass? Proper hygiene and gold bond solve the problem.
That reminds me of a story from a previous job I had. Once, on a work trip, there was a big golf outing with some clients. It was a full day of golfing and drinking in the Arizona sun. When everyone was finished they convened in the clubhouse for more drinking and revelry. At some point, the party was disrupted by the appearance of a big wad of nasty, very clearly used toilet paper in the middle of the floor. Some laughter and accusations were tossed around. Everyone gave it a wide berth, but nobody claimed it, and eventually, I think someone on the staff took it away.
Fast forward to some time later at another work event full of drinking, and one of my coworkers fessed up that it had been him. His explanation was: "I woke up that day with 'monkey ass' and was in excruciating pain, walking around, so I grabbed a bunch of toilet paper and jammed it in there. I forgot all about it, after I got drunk, and it must have fallen out of my shorts.".
Apparently it had been weighing on his conscience and he couldn't bear it any longer. Not sure I share that sentiment. If he didn't get caught at the time, that seems like something you take to your grave.