I told him that serious cyclists do not wear jocks. They don't wear anything under their shorts or bibs. I understand the generation he comes from. He's a bit older than I, but we are a part of the same "jockstrap generation." We wore them all the time. I remember wearing them to play tennis, to run, to play baseball (with cup), to swim. I recall buying a jock whose package had a golfer on it. I didn't wear one to golf, but I did when I first started wearing a jock use it to ride my bike with. That was more about the jock, than the cycling. It made me feel manly. I remember when I was in high school the football team hanging their jocks on the fence outside of the school to dry. I remember basketball players and other athletes hanging their jocks in their lockers for everyone to see. So I understand the generation he came from. But I worried that asking me that question reflected that he might be back in the day in terms of his medical care. I actually do wear jocks once in a while, but certainly not to cycle. The chafing would be awful.