a dude at our school had one.
and we called him out about too. in front of the auto tech teacher and everythng. He had scraped the label off or something, and it just looked silver, but we could tell what it was.
He tried to say it was a new "high density metal alloy" that was very tough, wouldnt rust, blah blah blah. The auto tech teacher just reached down, squeezed it w/ two fingers, and the can bent. It was so funny. ahahaha
. Dude just turned real red and got mad. :p