This is 100% real. Every can has a weak point at the lid were the top was attached. Still it is a risky party stunt. Not to mention the ruination of the teeth. Either way this guy has damn near perfected this trick.
deff not fake. I seen this shit at a party once, and was fucking amazed.
I saw it done with the old STEEL tin can 20 years ago. Biker dude ripped the top off with his teeth. I wouldn't even try it myself, even with an aluminium can.