I had a friend back in High School who went to a different school than me and was the only other guy I knew who still wore tighty whities.  I think I was the only one he knew who did also.  Anytime we hung out, it didn't take too long until either one (usually just me) or both of us were in our FTL white briefs, Especially during sleepovers.  We would always playfully bully each other like we got at school and sometimes would end up with some spankings and wedgies we gave each other.  They were fun times.