In each generation, teens tend to have a language all to themselves based on what is going on in their culture. This teen slang is used by many and is ever-changing.
BFF- Best Friends Forever.
Bounce- Means to leave.
Chillin'- Means relaxing.
Dope- Means cool or awesome.
Fly- Boys tend to refer to girls they think are good looking as 'fly'.
Hater or h8er- This is in reference to someone who just hates everything, even their friends. It is someone who is so pessimistic that the teen is tired of hearing from them.
Hardcore- Means something is intense. Generally about something that is a good experience, but also used when something bad is happening to a friend.
Ho- Whore.
My bad- It means 'my mistake'.
OMG- An abbreviation for oh my gosh or oh my god!
Sick or Ill- No, this no longer means someone doesn't feel well. It's used as a description of something or someone who is cool or awesome.
Tight- Means close in relationship.
Tool- Refers to someone who is stupid or a geek.
Wanksta- Refers to a person trying to act tough, but isn't really pulling it off.
Also, today's teen slang tends to throw words together to combine their meanings. Here are some of those:
Chillaxin- cross between chillin' and relaxing.
Crashy- Crazy and trashy. Not considered to be good.
Crunk- cross between crazy and drunk. Some teens use this term to mean cool.
Requestion- cross between a request and a question.
Tope- cross between tight and dope.