My dad eats all my food?

He eats all of my healthy snacks! It's so annoying. My mom will give me money to buy fruit, granola bars, yogurt and such, and over the span of of couple of days, I'll only have like two granola bars left or something. I don't eat that much, so it couldn't be me. I can't tell him to stop eating them either, or he'll start a big argument with me! He also eats my mom's food too! How do I stop him from eating all my food?
My dad eats all my food?
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