When used alone, crock is often used as a synonym for "lie" or "bullshit". But when paired with "off" the phrase can be used interchangeably with "fuck off". Because the phrase is relatively uncommon, it is a great way to tell your opponent off while also confusing the hell out of them and making them forget what they were talking about in the first place.
by Cr0ck 0ff February 14, 2017