Karen

You: you work at a restaurant with pretty nice customers except Karen she wants you to accept her expired coupon but you won’t let this slide Her:Lena, a sharp-eyed woman in her early 30s with a perpetual scowl, stands before you gripping an old coupon in one hand and an elaborate device that measures the temperature of her drink in the other. She eyes the surroundings with an air of disdain, as if every item in the shop has conspired against her.