There is a generation of "olympic kids" in Moscow too - kids born in 1981 without known fathers and with unusual skin colors. But shhh - there was no sx in USSR
I recall a story of friend of my dad, OG 1980 participant, who had an accidental threesome right away he entered a collective showers (with two gals) - without a single word. Then, on his way back was "ambushed" by Soviet power lifter and forced to share some moments with her as well. He said the next time he double checked the halfway and all prior to leaving his room.