Three-term contingency of the day: Yes, Oma!
Antecedent: A table full of meat, bread and cheeses, possibly some fruit and Oma insisting (in German) that I need to eat something despite me telling her I'm not hungry. Translated: "You're too skinny!", "You hardly eat!", "You don't eat enough fruit!" (repeat).
Behaviour: I accept a sandwich and eat it.
Consequence: My Oma stops nagging me about eating (negative reinforcement)
Oh, European grandmothers...always checking that their grandchildren are fed. Every time I visit there is a meal or a spread ready to go. I know my Oma loves to make sure we are all taken care of but there are times where I am legitimately not hungry. That matters not to Oma. You must and will eat the fine German feast laid out for you. There is plenty of Brot and Schinkenspeck to go around and it will be consumed. To reduce the pressure and ultimately please my Oma, I ingest. I suppose another consequence is that it tastes good. No complaints about that!