When someone farts into another persons butt. The other person mixes the fart around inside them, then farts it back out. It is a fart within a fart.
Sharon: "baby, I want us to move our relationship to the next level...I think we should create something together."
Ben: "I love you Sharon, but I don't think I'm ready for kids yet."
Sharon: "kids!? No! I want us to make an inception fart!"
by Mattybizzle September 20, 2013
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A feeling of having previously experienced a feeling of having previously experienced something - deja vu within deja vu.
I have the strangest feeling I've had the strangest feeling I've had this feeling before - I must be experiencing inception vu!
by positive hearts September 5, 2011
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The horn featured in the original score for the Christopher Nolan film Inception, composed by Zack Hemsey. The horn takes the form of a mammoth trombone backed up by heavy percussion (often repeated multiple times for maximum results of 'Inceptionation') that is played at intervals throughout the course of the composed piece of music to create a more than dramatic atmosphere, giving the characters a valiant amount of purpose.

Side effects of frequent exposure to the Inception Horn may include "the dream collapsing", "checking your totem" and everything happening in slow motion.
Leonardo Dicaprio: "This was not part of the plan!"
Joseph Gordon-Levitt: "The dream's collapsing!"
Inception Horn: "BWAAAAOORRRRRRRR."
Member of Audience: "OHHHH BOYYYYYY"
by NoWhay October 18, 2010
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1. Verb (V) - the act of watching the movie Inception while under the influence of a psychoactive substance, which causes the user to fully understand the depth, magnitude, and potentiality of the theoretical notion of inception.

2. Noun (N) - the period of time proceeding watching the movie Inception while the viewer was/still is under the influence of a psychoactive substance, which causes the user to consider if he/she is also in a dream. (Similar to the feeling after viewing the movie The Matrix)
EX. 1. "Bro, I'm so incepted right now, but whose dream are we really in?"

EX. 2. "During the incepted part of the movie, my girlfriend decided to jump out the window."
by Green Puffer April 5, 2012
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A state of mind associated with doing any of the below as a result of just having watched the Christopher Nolan movie Inception:
1. Interpreting real life events as being events in a lucid dream.

2. Calling a real-life person a projection of ones' subconscious mind.

3. Accusing someone of implanting an idea in your head through hypnotic or subliminally charged conversation.
1. Just took an afternoon nap, and I'm wondering if this is a dream within a dream. Argh, still have an Inception hangover.

2. I'm still attached to my ex and can't date other women. She's not dead and this ain't no Inception hangover.

3. I feel like I have no real motives. All my motives are ideas implanted in my head by my friends, family and the media. Gotta get over my Inception hangover.
by radialaxpro August 5, 2010
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It is a joint rolled within a joint. As the layers go deeper the time goes slower.
"Dude, lets roll an inception joint." "How many levels deep are we going?" "To limbo"
by gamecocknation August 18, 2011
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A folder within a folder within a folder. Usually used for storing porn, passwords, bank account details, and other sensitive files.
I don't password protect my account, but I store all of my important things in an inception folder, so I should be fine.

MacintoshHD/Library/WebServer/share/httpd/manual/developer/SOMETHING
by Leaf360 February 9, 2011
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