Back when I lived in a huge city (close to a million people) I never drove anywhere. I just took the city bus. My favorite spot was on the top deck all the way at the back. There usually wasn't many people sitting there and I could put my back against the window and stretch my legs out on the seats

Well one day I was sitting back there and a man pretty close to my age decided to take the seat by the opposite window. I was chilling minding my own business and I look up from my phone and notice that this guy's dick was just fully erect and popping out of his shorts. I'm not gonna lie it was kinda hot. I didn't say anything I just subtly stared at it. He also had no clue until he went to get off of the bus he noticed and quickly stuffed it back in his pants while he glanced over to see if I noticed. He looked so embarrassed, but I was definitely enjoying the show.