In college I went on a trip to South America one summer with a friend. I was a nerd and he was a jock wrestler. I was so into him sexually. I hadn't seen his wiener yet. A few times I caught glimpses of his balls pocking out of shorts he used to wear, and seeing those beautiful nuts drove me nuts sexually. One time we stayed at a place where there was a keyhole in the door that gave you a clear view of the shower area, which thankfully had no shower curtain! So I could watch him shower. First time he went to shower I was getting ready for the show. I watched him inside the bathroom take off his tightly whities and my heart raced at the sight of his cock. Then he started walking to the door. I was sure he knew I was spying on him. I was sure I was busted. I walked away from the door. He poked out his head and asked if I could bring him fresh underwear. Almost spontaneously I told him I was not sure which were his and if he could give me his used ones. It was a ridiculous thing to say but to my amazement and delight he handed me his still warm used undies! I ran to get him fresh ones but not before giving the used ones a good sniff. They smelled amazing. I handed him clean underwear. Then I jerked off sniffing his undies and watching him shower. Whenever I saw his cock I would gasp in ecstasy. His ass was magnificent. A sight to behold. A few times he bent over and I could see his beautiful meaty testicles dangling from under his ass. I watched the entire time smelling his used tightly whities! I was in heaven. His underwear smelled amazing and I jerked furiously watching him naked and sniffing. I was so excited I came quickly but then got hard again and started jerking off more and came a second time! I sniffed his underwear the entire trip, though I was sad when we left the place with the keyhole.