have you ever had a shower in under two minutes and washed your whole body?

Yes. My first thought was whether there may be a "best practice" way of showering efficiently and which professions may have suggestions on that (either jobs that are very time-constrained or jobs that are tight on resources?) and whether there were more effective ways of catching the water than a bucket (maybe some elaborate tarp placement? probably not feasible. the ultimate tarp placement would be one just around the body like one of the shields in star trek or star wars. maybe one of those bubble soccer balls upside down filled with water and one showerer? rolling down a hill in a plastic hamster ball full of water would be fun. also terrifying and basically dynamic waterboarding, but fun) and that was when the two minutes ended.