The art of acting by using your back as defined by Will Ferrell in this video, www.funnyordie.com/videos/ac76766583

Note: It's the concatenation of back and acting, bacting.
Bacting occurs when two actors are in the middle of a dialogue and the position of the camera shows the back of an actor and the face of the other actor in the conversation. The expressions made by the back-faced actor is bacting.
by Kyle N. June 29, 2008
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The term used to describe actors acting in the background of any film or TV show; see also: bactor.
Bacting deals with the ability to portray real people without the use of lines from a script.
by naopowpow September 17, 2014
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Best Available Control Technology - Used in reference to pollution control in a manufacturing facility. When a new piece of equipment is installed in a factory, the best available method of controlling pollution available on the market at the time must be put in place with it.
The EPA dictated that we follow the BACT guidelines when building our new refinery.
by Wiseman July 14, 2006
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1.When someone backs out of something, or misses out because they are scared, busy, etc.
2. When some one backs away from something in a cowardly way.
Dominick bact out of that basketball game when he saw the 7 foot tall center.
When we were getting ready to fight that pussy bact up cause he knew he couldn’t handle the smoke.
by Vt_Kobe July 27, 2019
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