DefCon speakers guide to #OccupyWallStreet hand signals

Next year, at DefCon (the world's largest hacking conference), speakers are going to be confronted by hand signals (like 'twinkles') that were developed during the #OccupyWallStreet protests. That's because much of the audience will have attended one of the many "Occupy" protests.

So that speakers don't get weirded out by this, I thought I'd write up a brief guide.