The backstory is that a beginner came to train at this BJJ academy in Brazil and asked to roll with the instructor, in a disrespectful manner. The black belt instructor rolls with him normally and applies a bread cutter choke. The beginner doesn’t want to tap and gets put to sleep. You can see by the nonchalant attitude of the instructor that there is bad blood and that he doesn’t care for the beginner as he leaves him on the floor without reviving him. The other team mates also laugh at him and leave him there.