When two or more males gather around a single toilet or urinal to see how many times each flow of urine overlaps until all participating males' bladders empty.
"Hey, Chad. Want to go in the bathroom and Cross the Streams? Bill and I counted to 59 last time. A new record!"
by GiraffePoacher August 15, 2011
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Crossing the streams: When you're urinating and defecating at the same time, and you maneuver your body just right so you can urinate on your feces while it's coming out.
This isn't a sexual act, but I'm sure someone can figure out a way.
"Dude, I just pissed on my shit while it was still coming out. It was awesome!"
"Yeah man, I cross the streams all the time."
by GhostGuyGGG July 20, 2009
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When a TV show/film is available on more than one streaming platform.
E.g.

Person A: “You haven’t seen the original Ghostbusters?!”

Person B: “Does it cross the streams?”

Person A: “Nah, it’s only on Prime.”
by WhatSheDoesintheShadows October 27, 2023
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A guy peeing in a toilet while his girlfriend (girl) sit on the toilet and pees at the same time.... The action is the girl sit on the toilet while the guy sits on her lap opens her legs and pees at the same time. The position on the man and women is that one the urine flows the 2 two streams of urine intersect each other.
Dude.... I saw my girl talking a piss so then I went and sat in her lap and we were crossing the streams.
by assummeddead August 11, 2013
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What you tell two people peeing at urinals next to each other to save them from untimely death, in reference to crossing the streams in Ghostbusters.
by zipwolf June 27, 2006
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When something is as bad as Egon's explanation of crossing the streams from Ghost Busters:
"Try to imagine all life as you know it stopping instantaneously and every molecule in your body exploding at the speed of light."
"Right. That's bad."
by greatscott! April 1, 2009
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