>>1712732I can only speak of it from the perspective of someone from the USA. Think of how old you were the very first time you seriously got hard and/or jerked off. I'm going to assume that was somewhere around eleven or thirteen for most people. Now imagine a horny and frustrated middle schooler surrounded by a sea of white (which was still somewhat common when I started middle school in 2011) during PE that you could ogle as much as you want without anyone realizing you are gay.
For a lot of gay men, their earliest faps were dedicated to that friend of theirs that wore those ever so snug tighty-whities. Some people just never grew out of it.