A term used to describe a person with such an immensely low internet connection that they are lowered to a level that of a female dog, using "fucking' for more emphasis on their lag.
Person 1:"Man this guy is keeping us from starting our game!"
Person 2:" I know right? He's such a Fucking Bitch Lagger!!!"
Person 3:"Lets just kick his ass out of our guild He's always doing this shit!"
A "fucking bitch" is someone, not just a girl in particular, that is extremely annoying. They cause problems, get in the way, act rude, do bratty things, and most of all are fucking bitches.