Video prompt: two young boys riding bicycles and pumping their legs vigorously while laughing. The scene takes place in a park, and the boys seem to be engaged in a playful, enjoyable activity. The video is likely to bring a smile to viewers, showcasing the boys' enthusiasm and playfulness.
Defect: Deformation (any reason involved with a movement)
Explanation: The hand gets blurry and deformed when holding the bike handle.