Characters hold food (cherries, biscuits, etc.) in their toes, so please don't confuse this with the chocolate_on_foot and food_on_foot concepts. The former is chocolate or a black reflective liquid (if white please consider using cum, cream or sugestive_fluid) and the latter is food (cake, etc.) stuck or placed on the character's foot. If it's just chocolate or food on the foot, don't use food_on_toes.
