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2.
To have your business (what you do to get what you want) promptly taken care of.
No LAN party this weekend, because I gotta catch up with my schoolwork; I'll call you when I get my shit together.
by Max April 04, 2003
 
1.
To facillitate the appearance of success and/or achievement.
"Mike and Jenny down the street have a new car, house and good career, they really have got their shit together."
by d-harrell October 19, 2003