Because the "wallflower" will usually exhibit a "lack of" interaction with others, it becomes symbolic of their thoughts and feelings towards others. The most specific example would be in the body language. Many times people who are shy have little or no eye contact with others. You may see a man, woman, or child try to avoid eye contact with others while out walking around in public or even in private. For some this may be a condition that becomes consistent over time and become a normal action.