Profoundly nightmarish was mine, here are the highlights:
Go to take LSD for the first time with some friends at the seller’s house. Just about the time the effects are taking over I realize I met the guy once about ten years earlier, when as a stupid kid I accidentally shot him in the face with a pellet spring pistol.
Bit later, on top of feeling ashamed, regretful, worthless, helpless and out of my mind I’m becoming very nauseated so I go to the front porch. In a brief moment I see another guy I hadn’t seen in years walking by on the sidewalk, and reach my hand up to wave at him. As my stomach empties he freezes in his tracks, mid-wave as his smile of recognition turns to shock.