The term "bussin" is really cool in teen slang. It means that something is extremely good. This thing can be tasty. It can be impressive. People use "bussin" to talk about food. For example, you can say "This pizza is bussin," and that means the pizza tastes really great. The word "bussin" is not for food. Teens use "bussin" for music, outfits, or experiences. You can say "That song is bussin," and that means you really like the song.
The word "bussin" comes from the internet and hip-hop culture. You can see "buss inthethen media a lot. When you say "bussin," it is like saying something is amazing, or fine,,e or so good. People usually use "bussin" when they are talking to their friends.