A short phrase used to divert attention from an actual topic. Sometimes best used whilst getting "owned" to let your opponent's guard down, in the hopes of striking back with great vengeange and fuuurious anger. Popularized by an incoherent, rambling moron AKA "Blaze" on the community website, Meetspot.com. This phrase came about while he made an attempt at a coherent statement, but failed utterly. Thus "or msame gother a bitch" was born.
Person 1: What meaning do you expect your delusionally self-important statements of unknowing, inexperienced opinion to have with us? You are a curdled staggering mutant dwarf smeared richly with the effluvia and offal accompanying your alleged birth into this world and you except anyone on that list to get offended by anything you have to say? You were abandoned by the puke-drooling, giggling beast who sired you and then killed himself in recognition of what he had done.
Person 2: Yeah.. or msame gother a bitch.
Person 1: Wait.. WTF?
*End of ownage*