Okay, kiddo, so first let's imagine that everyone has a little belly inside them that needs to be filled up with things like food and water in order to work properly. A politician who wants to get your vote might promise to give you lots of food and water, which would make you happy because your belly would be full and you'd feel good.
But imagine if that politician didn't really care about you, and only promised to give you food and water so you would vote for them. That's what "politics of the belly" means - when politicians promise things to people just so they can get their votes, even if they don't really mean it and aren't going to follow through.
Some people say that politics of the belly is a bad thing because it means politicians don't really care about voters, they just want to use them to get ahead. Other people say that it's natural for politicians to promise things to voters in order to win their support, and that as long as they follow through on their promises, it's okay.
But remember, kiddo, it's always important to make sure that the people you vote for really care about you and aren't just using you to get ahead. And it's also important to remember that sometimes things don't work out exactly as planned, so we should always be careful about who we trust and believe.