Top Definition
To forcefully use ones urine to cleanse the toilet of any fecal remnants from a prior bowel movement
Dude, why do your shits stick to the bowl like that. I'm not always gonna be there to powerwash em away.
by robbodobbo August 25, 2009

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To ejaculate onto a woman's face so forcefully that it distorts her makeup, like a powerwasher pushing dirt off the side of a house.
"I offered to power wash Mrs. Johnson's house for $100, but she didn't have any money so she paid by letting me power wash her."
by Mr. Lang June 08, 2009

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The act of performing anal sex on a woman, then putting your penis in her mouth and receiving a blow job immediately after without cleaning it off.
I pounded Sara in the ass for 30 minutes then she put my junk in her mouth and blew me. Chick gave me a power wash!
by Andy_W February 13, 2007

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The act of coming all over a girls asshole after having sex doggy style.
I bent Stefanie over the counter and fucked her from behind and powerwashed her good when I was done!
by bucknasty802 December 22, 2011

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When you bust one on a girl's face so hard it removes her makeup.
Man I had makeup all over the bed cause I powerwashed that bitch last night!
by Fo3 April 01, 2011

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When a person shits their pants and cleans it by pissing onto the stain.
Johnny accidentally pooped himself and had no option but to power wash it with his own urine.
by big al 69 August 02, 2013

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To power-wash is the act of ejaculating a gratuitous load of semen all over a recipient's body, starting with the face and working downward all the way to the feet, purifying them of their uncleanly ways and asserting dominance.
I worked that pussy hard and power-washed that bitch clean. She was drowning in jizz.
by Rodarkk December 26, 2016

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