My best friend growing up was always a lot more fit and developed than I until later. He was not the least bit shy about sexual matters even in front of his mother. If he got a hardon he would just whip it out and it was big and he knew it. He would always change clothes in front of me taking off his socks, undies and just getting completely naked. He would take a whif of his pits if he had gotten sweaty. Whenever we had sleepovers I coudn't resist smelling his ass, his feet, his pits. He was clueless (I think). It was so intoxicating. I guess that's why I can understand why folks have fetishes like this. I guess that's why it turns me on if someone wants my used underwear. Smelling my musky balls, jizz and twink ass.