Boxers are my default underwear, and most of the time I can walk without my dick getting hard. Yesterday I got off the bus and walked to the other side of the transit center to the trolley. For some reason, my dick started boning up. With each step, the stimulation of my dickhead rubbing against the fabric just made it harder. Usually, I'll stop for a moment to let things calm down. This time, I just kept walking. I didn't notice any particular stares, but I'm sure some of the people noticed. When I reached the trolley platform, it went down to a semi. As I stood there waiting, I could feel it get hard again. I'll turn 58 tomorrow, and I'm not complaining about an unintentional erection. I'm just glad that all the equipment still works well!