When a guy pisses in a girl's asshole and then f's her in the ass using his own urine as lubrication.
Did you hear John gave Melissa a honeydue waterslide? That's hot.
by Frankadfad May 28, 2006
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Can only be performed by old russian men. The russian waterslide is the act of attending a water park and penetrating young prey, of your choice while riding down a waterslide all while the arm is elbow deep in the anoose of the young prey wowza
Russian Man:"alright alex, time for a russian waterslide"
Alex: "AYE PAPI "

* screams heard throughout the country
by aben6969 December 4, 2013
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When a male is receiving oral sex, and the male tries to get a Chili Dog (when he comes, he pulls the girls* head so hard his cum comes out of her/his nose) a belgian waterslide is in fact a Chili Dog gone bad, at the same point the guy pulls , the other person throws up covering everything in puke, rather then sperm
When Shaft tried to give the hoe a Chili Dog, she choked and pulled a belgian waterslide on him, covering his nuts in vomit..
by Berre September 25, 2006
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When you are doing it in her vagina and then slide your penis down the gooch/fun bridge and when you reach her ass stick it in do it for a bit and then go to the top again
by Skoots69 May 18, 2019
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When you're looking up something on Wikipedia, but while reading about it, you encounter several other concepts you are not familiar with. Naive internet users will proceed to also look up those concepts on Wikipedia (said concepts are usually written as links when mentioned in the text, and therefore intrigue readers enough to click on them). They, in turn, lead to other Wikipedia pages, and before you know it, you've gone from reading about string theory, to studying dinosaur erotica in incognito mode.
Careful when reading about stuff in Wikipedia, kids, or else you may end up falling down a Wikipedia Waterslide.
by RelativelyRetarded December 6, 2017
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Oral sex performed outside in sub-0°C temperature.
My birthday is January 22 and my girlfriend gave me a canadian waterslide as a present
by fagorcultured January 23, 2016
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The sexual act of one taking a slimy shit into another persons mouth and swallowing it whole.
“Oh my god Debbie! We had sex last night and he wanted to try this position he heard about called ‘the Forbidden Waterslide’ and it was soooo good!”
by SEXGODTHEGOAT January 29, 2021
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