My dad always wore colorful bikini briefs. My mom would only buy me tighty whities . When I was in high school (and I was 18), all my friends were also wearing bikini briefs. So I not only went out and bought my own bikini briefs but I also took a couple of my dads. The ones I took from my dad had some crazy patterns in very bright colors. The pattern/colors were so bold, in gym class we wore nylon/polyester shorts and the pattern of the underwear would show through. Those bikinis brought a lot of attention and got a lot of comments.
When I went to college, my dorm roommates both wore boxer briefs. So I bought some to give them a try. I loved the roominess that the bikini briefs didn't have. My second year of college I started to get more brave and started going commando. I really loved feeling everything having room and freedom to hang. I also loved the bulge that showed through my shorts/pants. To this day I prefer going commando, but if I have to wear something, I will either wear a jockstrap or boxer briefs. I don't think I could go back to tighty whities or bikini briefs.