Real or not - it sure doesn't look real.

You can see when he's opening the bottle, there IS water in it so seems a switch is unlikely. Impressive trick or impressive ability to gulp down water

Seems real to me. Why not?

Looks like water diffraction to me looking through the bottom of the bottle when in his hands.

Some people can open their gullets and just pour drink down. In this instance it gets forced down, but as long as his throat is open, why not? Most people can't do this, but that doesn't mean it's impossible. This is an impressive demonstration of something I've seen before, albeit previously slightly less awesome

He's forcing what, 500mls of water down his throat in 1 second?

Regardless of the anatomical strangeness of it, I find it hard to believe there wouldn't be any splashing or overflow.

Wait, so there's absolutely zero water droplets left clinging to the side of the empty bottle or pooled at the bottom?
I call Shenanigans!

not convinced this is real. mainly due the speed it crushes (like a crisp packet - never even seen a bottle of water made that flimsy), and as bryce said, you'd expect a little residue afterwards.

I've crushed a bottle lengthways and i'm pretty sure my diaphragm is nowhere near capable of the force i had to use to do that to it, if that says anything.

I know you can quite easily suck a bottle into a squashed shape with your mouth, but that's sideways (in which it is flexible) rather than lengthways.

the latest bottles are insanely thin walled.. and thats Ozarka water... obviously high tech redneck engineering plastics

Crushing the bottle explains the air displacement in the bottle - but how do you explain the air displacement down his throat?

I too can open my throat and pour a Pint of water down without swallowing but my mouth is tuned up and open so displaced air can escape. His mouth is closed around the mouth of the bottle. That water should be shooting out his nose - Definitely FAKE

Dammit, I was hoping for a how-to video. The hours I waste drinking water... It's a sin.

Alas, I will have to reserve the "smash the bottle in your gullet" method for emergencies only.

Was it a girl?

I actually threw away an Ozarka bottle the other day (some ass threw it in my yard). It is a very thin bottle (almost paper thin), and I crushed it lengthwise like he did. I call fake, because it's still plastic and made a hell of a lot more noise when I crushed it.

I can "inhale" air into my stomach. Ive never tried with water but I don't see why it wouldnt work the same way.

Bet he parties.