People who would be grossed out at their cashier not washing their hands after they used the restroom amuse me. Those cashiers have been handling money so I gaurentee you washing hands or not their hands are gross (we don't get a chance to wash out hands while on duty). It's why as a cashier I always wash my hands at each break and after my shift is done.
And why you should just want that fast food employee to wear new gloves when handling your food as they are also handling money.
Money has poop, pee, drugs, blood and who knows what else on it.
Though with most people paying by cards these days at least I handle less money.