1. Someone who has let another down, usually having reneged on a promise or understanding.

2. A person lacking integrity, who goes back on their word; typically due to laziness, cowardice and/or greed.

3. A severe character flaw, manifestation of irresponsibility.

No Bull Shit, and old hacker acronym which is usually used to signify that the talk will be serious.

where do i start? hm.....'crap bastard' is a derogatory term used to describe the most lame and pathetic individuals. especially those trying to be 'cool' and making a total tit out of themselves. also those who let others down in a big way and have no social skills.