Dude 2: Hahahahaha!
Dude 3: What the fuck are you talking about?
Polish dude: Ok, get over it...
users 2 - 57: thumbs up!
user 58: phags!
The phrase roughly translates as "What aces" in Polish.
Well, it's a Polish phrase that was posted on a FailBlog video of some guys FAILing at moving a couch. Superstar YouTuber Ray William Johnson read some of the Polish comments -- including Co Za Asy -- out loud in a recent video. RWJ's video scored over 4 million views, which was apparently enough to turn Co Za Asy into a meme of its own. It even has a Know Your Meme page.
Google Translate says that "co za asy" translates into "What aces!" In other words, it was probably a sarcastic crack about the failed couch movers. YouTubers now use it as a synonym for "fail," indicating either that a video sucks, or that someone in the video has done something stupid and inept.
Him: Im just.. im just.. oh nooo dammit "CRASH!"
You; just co za asy o.o!