Someone with so little right to be on this earth that their cost of upkeep exceeds their marginal benefit of any possiblecontribution to society. While bitch usually refers to a female, a fucking shitbitch is a gender-neutral insult.
My roommate just sleeps, skips class, and eats junkfood while watching tv on his computer. What a fucking shitbitch.
A Lolita, single mother of several children, who likes to create drama by crying and is especially adept at complaining about both food and drink that's served to her at a restaurant.
Cook #1 says: hey bro, looks like you need to cook that chicken for table 26 again.
Cook #2 says: Are you kidding me!!! That fat broad has sent it back 3 times already!!
Cook #1: what can I say dude, she seems like a real shitbitch.
Or
Hey Bro, tell that stupid shitbich girlfriend of yours to shut the fuck up with all of her crying! She's more annoying than Chelbo!!