Look at the following writing sample. Classify it as formal, informal, or semi-formal.
Hi, guys. Today, I'm going to show y'all a totally awesome way to make a cake. First you make the mix and all that jazz. Then, you take it out of the oven. Don't get burned 'cause that's no good. Once it gets cooled off a little, you're ready to get crackin'. You can put on this fabulous, yummy pink frosting. After that, you can chow down.