Kuchisake Onna

the only way you'd have a chance to get away is by tossing hard candy, which she loves. while she is busy picking them up, you could run but it's not likely to work. also, if you tell her the first time she asks that you're in a hurry and need to be somewhere, due to her polite Japanese customs will compulsively/instinctively simply how, apologize for keeping you, and allow you to walk away unscathed, so long as you don't hesitate or look back.