A man and a woman argue whether a boy is adopted. The man claims the boy is adopted, while the woman denies it. The puzzle challenges readers to identify the liar within five seconds using observation. The solution reveals the man is lying, as the boy and woman share a matching mark on their necks, suggesting a biological relationship. A man and a woman argue whether a boy is adopted. The man claims the boy is adopted, while the woman denies it. The puzzle challenges readers to identify the liar within five seconds using observation. The solution reveals the man is lying, as the boy and woman share a matching mark on their necks, suggesting a biological relationship. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle