4. Do Restock the Toilet Paper
We're going to go out on a limb and say that toilet paper is pretty vital to the bathroom experience. It's already awkward when you have to ask a stranger to take pity and pass some extra TP between stalls, but this weirdness could reach previously unkown levels of discomfort if you have to cross gender lines. Pay it forward for that next patron on the potty and find a way to replenish their supply. Don't leave anyone stranded: It's hard enough in there as it is.