I think Mc Donalds has paper wrapping on there cones so the employess just touch the paper most the time i tihnk..
btw thats a prety weak stomach u got.. lol.. if you got diarrhea from just that.. its more likely she took a shit and didnt wash her hands, then her pickng up coins and giving u diarrhea.. think about it, how many times do u pay for food (your hands handle money) then u eat a burger or fries with those same hands :P.. its the same thing