This happened back in the 70's when I was in high school.
I lived in Lafayette LA at the time and mushrooms grew in just about every cow pasture. There was one in the field behind my apartment. I had tripped several times before on shrooms but nothing really significant. Just rooms seeming out of proportion and shimmering colors. We never used jello then to mask the taste, we always mixed it with kool-aid. One night I drank a little more than usual at a shroom party. During the walk home on a somewhat rainy night I ran into an aquaintance. We both looked at each other and connected. I said to him "mushrooms?" and he nodded with a smile and we both went our ways. After I made it back to my room I laid down and closed my eyes. I started to see the little "killroy" figures around the perimiter of my closed eye vision. The one where the guys nose is hanging over a wall and he's saying "Killroy was here." As the hallucination started to intensify I suddenly was outside back on the sidewalk where I had seen my friend earlier. I was enjoying the sight of the silver rain against the deep blue of the early morning sky when I was summoned back to my room by my folks knocking at my door.
I remember asking my dad how he knew I was home. He answered "Because I saw your footprints on the door." He always said the goofiest shit when I was stoned. I haven't any recollection of what happened after that. I don't do any drugs at all anymore. I'm 40 years old and have three kids. I think everyone should have these types of experiences at some point in their lives though.