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8.
1. when the water from a toilet or a urinal splashes up or out and wets your arse or shoes.

2. (metaphorical) unforeseen, unintentional, negative consequences of a person's actions.
1. John noticed a light mist on his shoes and cursed his splashback.

2. Neil realised he had incurred splashback when he recognised his girlfriend's mother as the older woman he had picked up while drunk the previous weekend.
by Gunnar Longshanks January 02, 2007
22 11
 
1.
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
294 97
 
2.
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
179 29
 
3.
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
73 13
 
4.
When the crap drops from a distance great enough so that , when it comes in contact with the surface of the water in the toilet bowl the water, and whatever is in it, splashes and hits your ass, hence splashback
It sucks to have a splashback after you pee
by eye kill fish October 14, 2003
78 42
 
5.
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
38 19
 
6.
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?
John: SPLASHBACK!
by Splashback. September 17, 2010
22 5
 
7.
1. When you drop a doogan in the toilet and it hits at such a force that water splashes up onto your cheeks and/or anus.

2. When you stand too close to a urinal whilst urinating and urine splashes back onto your shoes and/or legs.
"Shit, my arse crack is wet 'cause I got splashback from that toilet."

"Hey Joe, what's that all over your shoes?"
"Fuck don't you just hate splashback?"
by Joeyjoejoe Jr. Shabadoo August 06, 2008
23 12