Supercooling : occures with water that has a low number of impurifications and shit in it if kept at a temperature lower then 0 degrees celsius(the point where water freezes) like -10 or so.when you strike the object in which the water is placed THE FUCKER FREEZES DUDE LIKE OMG WTF???This is caused by bubbles formed by agitating the water because crystals of ice that usualy form on impure shit now form on the bubbles since there are no impurities.So there you have it,try it at home but remember,stick your finger in it to check if its under the freezing temperature of water!
If the water doesn't freeze instantly trapping your finger in causing your hand to look like a poppsickle,then you should hold the water in your mommas freezer for a while longer.OK BITCH?:)

No thats not really at that true. There is i site that tells you how to do that. Its a chemical that is called sodium acetate that you can only buy it on the internet. First you boil water then you add sodium acetate to the boiling water and stir none stop untill dislove then pour it in to a glass let cool in frige than take it out. You can put in a contaner and touch it will freeze or can can shank it like the viedo shows you do lots of cool stuff with it. But yes you do what you said doggy i done it.

.... Sodium Acetate? No, I'm afraid not. Don't go rushing to buy it and check out the "lots of cool stuff" you could do with it folks, what you see in the video's simple thermodynamics, the doggy dog had it.

Both doggy and dpdopeywqe are correct in the nature of "supercooled" solutions. However, even when supercooled, water will freeze solid if it gets cold enough and even if it is left undisturbed.
BTW: Bottled water is just tap water. Don't bother buying the expensive stuff just to try it at home.

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Looks to me like there could have been nitroglycerin residue around water bottle and thus a good shake made the poured water frozen... Ice.

I like turtles.

FUCK
this sounds educational
I am gone

That was COOL