The ultimate bond of brotherhood. To guys pee at the same time and try cross streams with each other. The ability for them to pee in front of each other resembles ultimate trusts in each other. The bond formed is stronger then the bond between Siamese twins.
The act of two men ejaculating at a trajectory that causes their ejaculate to contact mid air, and merge. This actively can involve the merged ejaculate coming into contact with an individual, although this is not required.
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 Marlena
Crossing The Stream
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 Carmelia
Cross The Streams
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.
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."