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5.
1)When a person takes a shit so hard or fast that they think the toilet bowl is going to explode with their shit.
2)When a person shits in an exceptionally short amount of time.
Wow, when I was taking a shit, I felt the toilet rock like there was an earthquake.
DUDE! You just had a power shit!

man that was some power shit you came out of the bathroom in 2 min
by T-Beast January 18, 2009
 
1.
n. The forceful, violent, sudden expulsion of a considerable amount of fecal matter. "Power shit" generally (but not exclusively) relates to diahhroea. Upon taking a power shit, spray paint is often the outcome.
Damn, Frank had a huge gut cramp so he snuck into his neighbor's yard, went into their RV and took a major power shit. I think he was afraid to make the mess at home. It took his neighbor an hour or more to clean up the spray paint.
by Frank Klaune April 16, 2005
 
2.
To defecate in a speedy and forceful manner. To do so in such a way that the shower of water thrown up by the turd's impact creates a mini-bidet of sorts, removing the necessity of wiping.
Time for a power shit.
by Nate M2 May 19, 2008
 
3.
To defecate with such extreme force and vigor it renders one completely fatigued, yet very euphoric. It usually results in the entire bowl being coated a healthy brown. Such causes involve White Castle, grease truck food, college dining hall food.
Oh damn man I dont know what the fuck I ate but MAAAAANNNNNN was that a good powershit!!!
by EricH April 19, 2005
 
4.
Shitting when in a hurry. Forceful expulsion of excrement.
A technique developed to save time when doing other more important activities and shitting is neccessery.
I was late for college so i had to have an early morning powershit.
Julie was very busy running her company so she had to power shit to save time.
That was a good powershit.
He powershits
we powershit.
Powershitting saves time.
by Myroslav Happy Lastowiecki November 16, 2007
 
6.
A shit taken in the same length of time it takes to piss.
Kate did a power shit and broke the toilet bowl
by NZBDS November 14, 2013
 
7.
Verb; a shit one takes before doing something important; a motivational or inspirational bowel movement; usually rapid.
"I took a power shit before that interview and I landed the job!"
by SEspos February 10, 2012