A bitch ass dude is who is domintated by his woman in all aspects of life. Many times the slut will string several of these unsuspecting and clueless men along in order to pay the bills, cuz we all know ho's don't wanna work. The mark-ass bitch will gladly give the slut all his money and time in exchange for her pretending to be faithful. This type of man will not get your back in a fight, he still will cock-block you if given an opportunity, he will tell his girl all your secrets that he knows and lie to you about it later. This person is a total piece of shit, pathetic excuse for the superior sex of our species. A failure, a dirt bag.
See Also: Mark-ass buster
I can't believe that mark-ass bitch didn't come to your bachelor party cuz he had to babysit her kid while she went to conjugal visit it's daddy in jail.
The worst type of bitch, one who is a "mark", which means that he/she is a target that is very vulnerable to attack from others. Like a sitting duck. Calling someone this implies that you intend to murder them or do them harm in some way, or that you suspect someone else will, and that they deserve what's coming to them.
"Biggie Smalls and Jr. Mafia some mark-ass bitches." -2pac ("Hit 'em up")