This isn't the first video we've seen of somebody inhaling sulphur hexafluoride and then talking, because we saw Mythbuster's Adam Savage do it in this video (way back in 2008!). This is just another one. It's like watching videos of cats trying to fit in boxes that are way too small for them. I don't care how many of the same video there are, I need to see them all.
Hit the jump and get your high school chemistry class on.
Thanks to Dunc, who got me a tank of sulfur hexaflouride so I could try this for myself but it turned out to be nitrous instead. I'm not complaining.