Like many offices, we have a small dish on the front counter full of generic hard candies (peppermints, butterscotches, Werther's, Jolly Ranchers, etc.).
Lady waiting for her appointment comes up to front counter.
Lady: "Can I have one of these candies?"
Mary: "Sure. Help yourself."
Lady: "Thanks. I didn't have time to get breakfast today."
She picked up THE WHOLE JAR, carried it back to her chair, and in the space of about 5 minutes unwrapped and crunched through about 20 pieces of hard candy.
Then she brought the empty jar back to Mary, full of wrappers.