But it's a nothing comment. Water has an LD50. It's 90ml/kg. LSD has no known LD50 and has not been the sole cause of any known death. Drowning in it would not mean you died from LSD toxicity, you would die from asphyxiation. Sand doesn't have a lethal dose but can still kill you. But it wouldn't be from sand overdose.
I had a friend that od'd on LSD. His brain swelled up and actually cracked his skull. He was only 20. His sister rushed him to the hospital, but he was brain dead by then.
Was that before or after your other friend took a hit on a joint that was laced with PCP and they ripped their own face off their skull while looking in the mirror?