This is a video from AsapSCIENCE explaining the lethal dose of a bunch of different drugs, as well as other things like water, sound and elevation. It says you'd have to eat 22kg (~49 lbs) of cannabis to die, or smoke 680kg (~1,500 lbs) worth in 15 minutes. Is that a challenge? Also, I didn't know you could really die from the cyanide in cherry pits. I thought that was just a story my mom made up to get me to stop sticking them up my nose.
Keep going for the video.
Thanks to Landon, who heard the lethal dose of my love is a single hug, and he is correct.