Sure they did. Youve seen examples of it already. They have been posted to you before.
I recall no such examples - perhaps you're thinking of someone else. And since the lethal dose for THC is about 240 joints' worth, I doubt such examples are genuine.
You do know what "proximate" means, I hope?
While we are on the topic, you may or may not be shocked (I wasn't) regarding how many serial killers were big marijuana puffers. Psychotic murderers sure do love themselves some weed. Who knows if they were already sick, or if the pot made them that way? Here's a few.
Columbine? Yup. Big doobie smokers.

Batman theater massacre? Yup. Big pot smoker.

John Wayne Gacy? Loved the weed.
