"In Before Whack." Term used in online message boards when a thread is started about a topic that does not comply with the message board's rules of conduct. Users post this as a way to be cool and say they were there as part of the scandalous behavior before the administration found out about it and "whacked" the thread. This can also be used as sarcasm for a thread that appears to be bad, but is quite innocent.
User starts a topic with a picture of Hillary Clinton sucking on a popsicle stick.
Another user replies: "ib4w"