Thanks Deathcell.
Here is one from me. I was 15 and had taken a strong hit of LSD (1986) and gone for a bike ride. Everything became sort of blurry with colors and edges becoming mixed up, and colored streamers of light were flashing off the cars. I had to stop at a park and lay on the grass because I felt like I was sliding down a hill sideways, and would have soon crashed my bike.
I heard a whoosing noise and looked up. On the horizon was a fluffy cloud. It formed into vividly clear full scale hallucinations. The cloud now looked like the torso and head of a bearded (God type) old man. Across his chest was a sucubie (winged naked woman) and other odd hallucinations. I could hear the old man breath. As he breathed the cloud would swell and the woman would flex her wings. then he would exhale and blow out a billow of smoke which was accompanied by a whoosh sound. I stayed and stared at the clouds changing into fantastic hallucinations for maybe an hour.
The thing that grabed my attention in general was the fine wispy bits of clouds near the edges. They would move and shift much faster than the body of the cloud.
What value was the experience other than being an amazing memory? I was young, and believe it or not, I had never 'really' looked at clouds. The next few days I noticed that the edges of the clouds are always that way on a cumulous cloud. In that way we could say the experience woke me up to something I had been missing. would I have ever discovered the majesty of clouds on my own? Maybe, but in this case I remember the first day I ever 'really' looked at a cloud.