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A phenomenon which defies all known physical laws when, regardless of size, density, height, force and slope, a dump fires bogwater skywards and strikes the victim directly in the butthole or genitals.

Generally occurs only after you've already pissed in it.
Oh man, splashback! What the hell? That crap was tiny...
by Evil French Dave July 21, 2006
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When you take a big crap and you terd lands in such a way that the dirty toilet water splashes back up at your ass getting you all wet. Usually refered to when your launching Ass Rockets.
Skaz:Im gona go launch some Ass Rockets
Chubbs:Alright, have fun, and watch out for the splashback!
by Chubbs March 14, 2004
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A sort of toilet tsunami. Dropping a turd from a height which hits the water, causing a tidalw wave up the pan which in turn sploshes the water over your arsecrack..

Its bad when it happens in your own toilet - Its worse when it happens in a public one.
Above explains it all.
by wayne March 24, 2005
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The water that goes up your ass when you launch a turd down into the toilet bowl.
John: Hey!
Sam: Hi!
John: You know what's a million times worse than having no toilet paper?
Sam: What?
by Splashback. September 17, 2010
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A fright that is caused by cold toilet water hitting the anus after dropping off a round densely packed type of shit called a bomber.
Cameron thought a monster from the toilet was coming to get him when the splashback from the bomber he dropped off hit his O ring.
by Goth Doll July 04, 2016
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The achievement of getting water on ur bum after dropping a log down toilet
"Man, that was some mad splash-back i got there"
by TMB June 17, 2003
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When you are taking a dump and the deployement of your piece of crap makes the toilet water splash straight up to your ass, usually in your ass-hole.
I was taking a huge dump the other day and had one hell of a splashback!
by Sky M March 12, 2008
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