Back up pairs

[Torchwatch]

Ideally one should wear a swim thong when going down a water slide, the flow of water down the slide protects one from friction with the slide and one goes faster. Wearing shorts on a water slide removes the water, causes friction and tears the shorts.
French boys know this and tuck their speedos into a thong before sliding, the lifeguards supervising the top of the slides ignore it. If you want to slide fast slide French.