Insulting description of a person whose condition is "full of shit" because his or her ass points inward, directing excrement there.
I don't care what Erika says, I know that Pierre didn't give her a Cincinatti brown out last night, she is such a rectal inversion.

Khrystal's pimp called her a rectal inversion when she insisted that she only made $40 last night.
by mr pinky June 2, 2007
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The act of having your head up your ass.
"Are you really that stupid? You must be suffering from a cranial rectal inversion. What a dumb-ass."
by BRAUCHWURST April 19, 2003
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nice way of saying you have your head in your ass. also known as H.I.A.S (head in ass syndrome)
"I know that our anniversary was today, but, I was having a cranial rectal inversion and I will make up for it this weekend."
by grant24 May 15, 2008
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The psychological disorder of being unable to remove one's head from one's ass (i.e. cannot see what is right in front of their face).
"Wow, if that person with Cranial Rectal Inversion farts, they're going to completely asphyxiate themselves!"

"Don't eat beans if you've got CRI."

"You'll need some Preparation-H to help get your head out of your ass."
by queenducttape December 9, 2005
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John: Yo I'm gonna go pwn some n00bs lol lol rofl !!!11!!oneoneone!!111!
Luke: Yo you are suffering from a serious Cranial Rectal Inversion
by EllieJewFace September 4, 2007
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having ones head up their ass
that asshole had a serious case of rectal cranial inversion.
by jefbenet November 6, 2003
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a serious medical condition, wherein your cranium, or brain, has changed places with your rectum, or asshole. it can lead to jail time, unwanted pregnancy, divorce, loss of job and/or income, and public embarrassment.
joey: oh man, i can't believe i broke up with chloe; she's the best thing that ever happened to me. how could i be so stupid?
zoey: you may have been suffering from rectal-cranial inversion. you may still be. consult your psychologist or your proctologist as soon as possible.
joey: thanks, you're a real pal. i guess i need a tractor.
zoey: for what?
joey: to pull my head out of my ass!!
zoey: true dat.
by earpuller May 10, 2006
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