In her early 20s, one of my best friends used to get incredibly high on anything she could find (and she could find a lot because in retrospect everyone there had a fondness for mind altering substances and very varied tastes for them) and wander in the woods around her mountain college not even really knowing all of what she'd consumed.
Frankly, I'm just glad all that happened was she got kinda confused every so often and developed a lot…