I unforget, that used to be a common recommendation in home-brew books.
100 proof ? pure ?
Along a similar line of things blending into very different things ... I
made a big mistake a couple of weeks ago. A tray of little red peppers
from a market-stall; I assumed without thinking that they would be a
miniature version of the innocuous "sweet" variety, and proceeded to
take the seeds out of one and stick half of it into my mouth. When I
recoverd, I looked at some pictures, courtesy of the web. Scotch bonnet,
I think. Do not do this unless you know what you're doing. (1/2 hour
after I'd spat the thing out as fast as I could, my eyes started
stinging pretty painfully, one of them swelled up halfclosed. 
Which led me to a List ... it's by no means the most extreme,
said to go up to about 100k units, there's one that goes up to 2million.
Which led to more they-don't-call-it-the-web-for-nothing - peppers stop
at the same number that CS gas is said to start from.
 I don't really Do demos (apart from my country starting wars on
trum^bushHblaired-up grounds, and so on. Particularly of the teargas sort.
It was _way_ more extreme than anything I'd ever met before.