To violently throw an object that you deem to be worthless, inferior or just plain garbage. It is not uncommon for the person participating in this act to yell the word, "YEET!" at the top of his or her lungs, notifying all surrounding individuals in the area that said object is useless.
John: "Hey man! Happy 21st birthday! I got you this for your special day, hope you enjoy!"
Jack: "KidzBop? Are you serious?"
John: "I thought you liked it? It has some nice songs on it and..."