Neptun's Kiss 

The same as backsplash.
Hugely annoying.
Can be avoided by clever usage of toilet paper.

"Aieeeh!"
"Whut?"
"Neptun's Kiss, man."
"So what?"
"The water's effin' freezin', man!"

Neptun's Kiss by drKarling July 2, 2004

neptune's kiss 

The splashback of cold bog water up your ringpiece when dropping the kids off at the pool.

(from cubicle): "Aaaaaah"
(from other cubicle): "Neptune's kiss?"
(from first cubicle): "More of a peck on the cheek."

neptune's kiss by Dannyboffin October 28, 2007

Neptune's Kiss 

when the water bounces up at your butt after you poop

*pooping*
aw man i got a Neptune's Kiss

Neptune's Kiss by Daniela_gAmer January 27, 2015

Neptune's kiss 

When your shit makes such a splash it comes up and hits your crack

Damn, that shit was so big I got Neptune's kiss

Neptune's kiss by Redrose96 December 1, 2015

Neptune's kiss 

A Neptune's kiss is the splash of water that touches your butt after pooping in the toilet. The Neptune's kiss is basically your shit kissing gou goodbye

"took a dump so big I didn't even need to clean myself afterward: the massive Neptune's kiss resulted did the job"

Neptune's kiss by AuroV February 10, 2018