You shouldn't classify people based on their race and height.
Dave is doing a tryout for a basketball team and John being an Asian and short also participates in the tryout.
Dave wants to react to John's ability.
Dave quietly observes the performance of John who surprises him with superior skills in basketball.
Dave tells John that his tiny body and strength is a disadvantage in playing basketball.
John feels proud that he shows his fullest strength in the tryout and gets accepted by the team.
John feels offended and frustrated by Dave's comments.