Peer pressure often happens because you don’t want to be alone or left out, so you go with what other people think in order for them to include you. A peer can be anyone around the same age as you, like a friend, classmate, or even someone you’ve seen on TV and admire.
Source: Peer pressure @ ReachOut.com: Get through tough times
image: Bully by Sergejs Babikovs under Creative Commons license