0156名無しさん@ピンキー2019/10/30(水) 23:20:50.79ID:jpIWNS7A0 Is it true that boys had to swim naked in swim class or the YMCA in 1960s or 1970s? https://www.quora.com/Is-it-true-that-boys-had-to-swim-naked-in-swim-class-or-the-YMCA-in-1960s-or-1970s Yes, it is true.