Verifying the correctness of information by saying or posting something that is wrong, and having people correct you.
The people doing the correcting are typically known as "suckers."
In short, slack-checking is like fact-checking, with less work involved (except for the suckers).
1. Why bother reading about it when you can slack-check it on the internet?
2. (In a 1675 letter by Isaac Newton's lesser-known, wiser and lazier twin brother): "If I have seen further it is by slack-checking on the shoulders of Giants."
the most feared of the ancient wizard warstaffs from the year 1999 - dating back to the feared struggle between rebels (will greg ben) and the most powerful evil wizard of the era - sam. With chucky he tortured and killed many, however when the final faceoff occured near the pond of azarorth where finally the famous rebels cast the devil stick back to the watery casm from whence it came