Becoming upset about something before knowing all (or any) of the details.

a term coined to be used at the end of something insulting or offensive to take the heat off you when you say it.

Unloading all of your emotional crap unmercifully onto one or more of your friends.

when you lose a lot of weight due to missing meals, because you play too much call of duty

The act of wishing someone 'happy birthday' in Facebook wall post (actually knowing the person IRL is optional)

past tense: wall'd him/her an hb

The act of walking slowly or "shuffling" because you're too preoccupied with tasks being done on your smartphone such as browsing the internet, texting, etc.

The Smartphone Shuffle can sometimes be dangerous for oneself, such as crossing a roads, not paying attention to surroundings. It can also be a nuisance for other people as distracted Smartphone Shufflers block hallways, stairs or sidewalks and impede flow of pedestrian.

To express on AIM when something was funny, because just 'haha' isn't that dramatic and can be used as just aknowledging when someone has said something.