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2.
Concatenation of slacker and bitch. A slackbitch is a person (generally female, but may be male) who is extremely lazy and prone to procrastination. The term is used as a playful, mocking insult, and is most often applied to oneself, not other people. Slackbitches are usually quite proud of being slackbitches.
I am such a slackbitch, I don't use hangers or drawers to hold my clothes, they just lie about on the floor in varying states of cleanliness.
by Stephanie M. October 23, 2003
 
1.
Someone who is so lazy they would rather complain for months about flash player not working than actually click one link and install it, so they can watch a monkey piss in it's own mouth on youtube.
Lee: OMG i just found a monkey pissing in his own mouth on youtube check this out *sends link*

Mary: I can't because I don't have flash player installed. It hasn't worked for months

Lee: Oh you fucking slack bitch...
by lhm August 11, 2008