When someone who has an extreme case of diarrhoea that when this person excreates with a certain amount of excessive force it ricochets of the bowl and splatters on the persons back is also a common sexual technique amongst mongolian sadists
dddddddddddduuuuuude I so need a shower, i jst had a major case of a stinky splash back. Damn mexican food
by Dr Augustus Jackson August 27, 2008
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While receiving or giving a "Blumpkin, a log of shit hits the toilet water at a force large enough to create a splash of water, striking the face of the Blumpkin giver.

Only possible during a "Blumpkin"

Toilet water must strike the head/ face of the giver
Miguel: "Yooo, nigga, Cindy was giving me a Blumpkin last night and one of my logs hit that water so hard that it splashed her in the face"

Dan: "real nigga shit?"

Patek: "Daaaammm, you hit that THOT with that Salt Lake City Splash Back"

Miguel: "Gs up, hoes down"
by SLCSB November 9, 2017
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When a heavy and/or furiously excreted turd hits the toilet water so hard that it causes a splash of water to jump up and stain your upper body clothing.
God damn Son! I suffered a major back splash when i dropped the kids at the pool just now! All my shit be shitty as a shitty ass mutha fucker!
by Dr Jones the Jew February 20, 2008
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Noun - the "spray" resulting from the use of a urinal, usually resulting in pee speckled pants/shorts and hands.

Typical causes - standing too close, excessive stream strength.
Tom: Hey man, What happened to your pants? Get caught in a sudden crotch downpour?

Jimmy: Ha-ha. No, stupid back splash from the urinal...
by BlackjackII April 7, 2008
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The splashing back of dirty toilet water on your anus after dropping a monster duce.
damn man, i just shit so big that i got back-splashed.
by Aaron Cobb November 25, 2007
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the act of ejaculating on a woman's back
after i did her from behind i pulled it out and gave her a back splash
by JAB/EJB July 6, 2006
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A back splash is when you're taking a dump, and the crap makes a splash and hits you in the anus.
Usually very cold water unless you've peed in it and warmed it up.
"Damn that shit back splashed my anus!" -Someone 2016
by PileOTaters December 11, 2016
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