Imagine switching to this voice while hypnotizing someone

You know what helium does to your voice, right? Well, check out what Sulphur Hexafluoride (which is 6 times heavier than air) does to it. Then watch as someone sails an aluminium foil boat on top of a container of the stuff.

Why do I get the sneaky suspicion that massive quantities of this substance are going to be sold over the next few months.........?