man, what are water polo pics doing in this thread, anyway.
Its not the sport, its the meaning of the phrase "in the buff" or "played in the buff". These are accidents. Accidents are "accidental nudity". Playing a sport "in the buff" is intentional nudity, in essence a "spirit of naturism" thing.
I am going to make some people here take a remedial course in "the classification of the nudes"
Klondike