While sometimes mistaken as a simple prefix added to the common epithet 'bitch,' 'slumbitch' is actually a slurred form of 'son of a bitch', but useful for both genders. Instead of an insult, however, it is most useful as an interjection when events do not conspire to your fortune.
Slumbitch! I do not believe you made that shot!
by Kendon July 25, 2004
Similar to fucktard, but with more ownage.
"Static is such I slumbitch"
by play_5 February 03, 2003