Pollywogs!

First, the Dilbert Blog sketches out a pretty good idea for the future of democracy…

And, either 1/3 your body weight or 1,500 pounds of marijuana, injested all at once, is a fatal dose.  I'm assuming the 1/3 your body weight fatally clogs your bowels with roughage, while the 1,500 pounds assumes you don't die of some terrible gastrointestinal explosion (actually based on two government studies)…but don't worry, you can still safely smoke over three pounds in one sitting, no problems there…two choice quotes:

In strict medical terms marijuana is far safer than many
foods we commonly consume. For example, eating ten raw potatoes can
result in a toxic response. By comparison, it is physically impossible
to eat enough marijuana to induce death.Marijuana, in its natural form, is one of the safest
therapeutically active substances known to man. By any measure of rational analysis
marijuana can be safely used within a supervised routine of medical care. 

Easy to keep it out of the hands of the sick and dying when you don't have to worry about vomiting your tea and toast up and wondering if you'll keep anything else down throughtout the day…