It means to let others know that you are a person who especially likes to eat delicious food.

The so-called foodie refers to people who like to eat all kinds of delicious food, which is popular on the Internet now. It doesn't mean that a person can only eat but can't do things, but has a special liking for delicious food.

For example, when you go shopping with friends, you buy a lot of snacks, such as fried skewers, octopus balls, duck necks, and so on. When you go to a restaurant, you can also eat pickled fish, fried beef and many other things. You are not resistant to good food, and people know that you are such a lover.

nowadays, many people say that they are foodies, but in fact they are poking fun at their love and eating too much.