I always thought “Engelstrompete” (Brugmansia) gives you the worst.

In my teenage years some mutual friends tried it. One ran off for a half a day into the forrest with a Garbage Bin Lid and a Wooden Spoon “to fight the dragon”. He came back with a scratched face and body but was " sucessful" and happy(?) about somehow.

Still kinda funny though

On the other hand I heard stories like hell on earth. Fe something like its Raining Fire and all the other people are zombies. For 3-4 days. And he thought it was all real.