Both are a turn-on in different ways. This weekend I was visiting a friend at his house in a beach town. On Saturday we had been swimming earlier and had a late-afternoon invitation for outdoor cocktails at his friends' house. We wanted to have the option to swim in their pool, but it was cooling down slightly, so we decided to wear polo shirts with board-short style bathing suits. The only such bathing suit I had with me was the one that I was wearing already which was still damp, so I peeled it off and threw it in his dryer for a few minutes. We see each other naked all the time, so this wasn't a big deal.
I then took a quick shower and got dressed...at my top half...by putting on my polo shirt. I came out to the kitchen that way and jokingly asked if I was dressed appropriately for the cocktails. He said not for his friends but I was dressed fully appropriately for a starter cocktail there if I wanted to join him for one. I said sure. He said he'd join me in the dress code, so he dropped his shorts, too, and made us drinks. It was a great bonding moment sharing a drink in our matching outfits...(except color...his was white and mine blue)...just polo shirts. Mine shirt was cut slightly higher, so my penis was fully exposed. His was slightly longer, so it covered the base, but he has a longer dick, so much of it was dangling below.