Okay kiddo, imagine you love soda. You know how you can buy it in cans or bottles at the store? Well, imagine instead of a can or bottle, there's a big metal container called a keg that holds a lot more soda.
Now, instead of soda, imagine that container holds BEER! That's right, kegs are often used to carry beer too.
So, when people order keg beer at a party or at a bar, they're getting beer that's come straight from the keg container. This is because the keg keeps the beer fresh and helps it stay nice and cold.
Kegs can hold a lot of beer, so it's a good idea to get one if you're having a big party. Plus, it's a fun way to serve beer!