by SuperTim100 October 11, 2011

The act of leaving up holiday decorations so long that decorations for upcoming holidays are up at the same time.
Halloween decorations up through Thanksgiving, or even worse, Christmas is worse than any other cross holidation.
by Trebleclef44 January 10, 2014

When a man is having sex with two or more women and pulls directly out of one and penetrates the other without rinsing his penis or condom. Seen in many porn flicks.
Wow! That orgy scene had massive amounts of cross cuntamination going on! I bet everyone's genitals rotted out after filming!
by Detr September 6, 2013

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.”
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

by tomthemailman December 15, 2020

He shaw-crossed after his steady masturbation was over.
by WhiteSharpie August 2, 2015

I think the main reason that traps are gay is because...sorry, what was I saying? I just had a cross thought.
by Trapsaregay January 7, 2018
