You should be appreciative when people try to help you.
Trevor slips and falls and his friend puts out their hand to assist Trevor back to his feet.
Trevor wants to react to his friend's gesture.
Trevor thanks his friend for his assistance and takes their hand to get up.
Trevor slaps his friend's hand away and tells them to mind their own business.
Trevor's friend feels appreciated and is happy to assist Trevor.
Trevor's friend thinks Trevor is rude for reacting so harshly to a helpful gesture.