Question: is 5 foot 4 short for a 16 year old boy?
Answer: If he wants to play basketball, 5′4 at 16 might be short. At 16 he may only be starting to hit puberty. Or he may have hit puberty at 14 and hes only got a couple more inches to grow. As other have said, it can vary greatly on what “perfect” is and what the boy wants to do at 16.