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1.
The state of reacting to all things like a bitch for a determined period of time. Like autopilot, except instead of flying a plane without thinking about it, it's being a bitch without thinking about it.
I did crappy on my bio final, my boyfriend is a jag, and I just got my period. As a result, I'm going to be on autobitch for the rest of May.
by buckygoldstein2011 May 31, 2011
 
2.
1. The act of not letting someone finish a sentence without making a bitchy response.

2. A person that won't allow someone to finish a sentence without making a bitchy response first.
1. "I was trying to tell my mom why I came home late last night, but she autobitched and grounded me without letting me explain what happened."

2. "I was trying to tell my mom why I came home late last night, but she didn't let me talk. She's such an autobitch!"
by burythescenequeen September 08, 2011
 
3.
A word used in Counter-Strike to define a player who constantly uses either the Terrorist H&K G3/SG-1 or the Counter-Terrorist SG-550 Automatic Sniper Rifles, because of the complete lack of skill involved in wielding them.
"OMFG, that autobitch is camping in the same spot again!"
by Zicdeh January 17, 2005