Video prompt: He holds a buzzing electric toothbrush, its soft bristles whirring rhythmically as he carefully moves it across his teeth. The boy's reflection shows his focused expression, with a hint of toothpaste foam at the corners of his mouth. The bathroom is filled with the gentle hum of the toothbrush and the faint scent of minty toothpaste. As he finishes, he rinses his mouth with a cup of water, swishing it around before spitting it into the sink. He then flashes a proud, toothy grin at his reflection, satisfied with his sparkling clean teeth, before hopping off the stool and skipping out of the bathroom.
Defect: Object Merging or Overlapping: Multiple objects may overlap unnaturally, causing visual confusion.
Explanation:  The razor in the boy’s hand undergoes shape changes and occasionally merges with his mouth, creating an unrealistic effect as the razor should remain stable in shape and separate from the mouth.