In the video, a man is sitting in the passenger seat of a car and talking to the camera. He then proceeds to demonstrate how to crack his knuckles. He uses his right hand to crack the knuckles on his left hand. He starts with the index finger, then moves on to the middle finger, ring finger, and finally the thumb. He cracks each knuckle individually, making a popping sound with each crack. The man is wearing a blue shirt and a red watch on his left wrist. The car is moving, as indicated by the passing scenery visible through the window.