Peer pressure

"Peer pressure is a term describing the pressure exerted by a peer group
in encouraging a person to change their attitude, behavior and/or morals, to conform to, for example, the
group's actions, fashion sense, taste in music and television, or outlook on
life."(wikipedia.com)
If you were a teenager you probably went through peer pressure, we all go through it. If you wanted to hang out with a certain group you needed to have or do certain things. When your being pressured by your peers, its usually about shoplifting, drinking, drugs, smoking, doing risky things while driving or having sex before your ready. You might refuse, they will just try to get you to do it any way, by saying things such as: "are you chicken", "your not hurting anyone", "i wont be your friend if you don't do it" and other stuff. You should never give into peer pressure but all too often we do and then regret it.
For example, an article I found at:http://www.kidshealth.org/teen/your_mind/relationships/peer_pressure.html

"Now!" whispered Suki. "Quick, while the clerk's not looking."

Heart pounding, Leah leaned against the store's unattended makeup display and slid two tubes of lipstick into her purse. She looked bored and detached as she followed her friends Suki and Jill out of the store, but inside she felt panicked.

"I can't believe you made me do that," Leah wailed.

"Relax," said Jill. "Everybody does it sometimes. And we didn't make you do it."

She said nothing, but Leah knew she wouldn't have done that on her own.

Not all peer pressure is bad! The good kind of peer pressure is refereed to as peer influence.
Our friends play and important part in our life, we might find someone with the same likes and dislikes and you, and if you have peers dedicated to doing good in school they set a good examples for you, you friends also pay attention to your problems and give you advice and they will quickly tell you if they think your doing something bad or risky.