[Byron]

I too had completely forgotten volleyball - sungas and sometimes speedos are to be seen, particularly on Brazilian beaches (there is limited activity there also in beach wrestling).

Burning of the bum would not be a problem on a multiple waterslide I would think as the volume of water is a sufficient friction barrier. What might be a problem is the arms on the sides of a chute - need to tuck-in well on a narrow one.

Funny to think that hoisting the speedos is for the opposite purpose by the Aussie guys in their surf boat races.