toalache
Toloache is the Aztec word for the Jimsonweed or Sacred Datura, a plant that some fools take because they think the visions that it will produce will be cool. Unfortunately, many get very sick and some die because they do not have the cultural understanding of the root (in the native cultures which use it, the herb is taken only once in a lifetime.)
He smoked toalache but he didn't know the proper proportions, so he ended up in the hospital for a week.