Usually a prick. A 'bitch-whore shit-dick' will usually fuck up everything he/she does. They don't care about anyone except themselves, so you can never really trust them. Unknown why they do the things they do. Call your friend this and it's quite possible they will shit their pants then slap you in the face. "Bitch-whore shit-dick" is interchangeable with the words dick, prick, coward, asshole, fuck-face, pussy, etc.
Person #1: Why are you being such a bitch-whore shit-dick?
Person #2: Because I'm a pussy.
Person #1: That's what I thought.....