The short answer to that question is, “That’s always a possibility.” I was sitting at my desk at work effectively feigning consciousness when I looked up at the shelf over my computer and saw a rainbow.
Me (thinking): Holy crap! What’s this about?
If Judy Garland started singing Somewhere Over the Rainbow on the iPod in my mind I would have accepted the possibility that I was likely suffering a flashback from some chemical I may have ingested in my past. I highly doubted that the English Breakfast tea I was sipping at that moment after polishing off a cup of Life cereal in skim milk would have triggered any visions other than my constant craving for a bagel.
Since there is supposed to be a pot of gold at the end of a rainbow, I was prompted to look behind my desk to see what was there. Curious, I peeked behind my monitor, half expecting an encounter with the Lucky Charms leprechaun. Rather than finding a vessel overflowing with riches or a silo full of noxiously sweet cereal, I only saw a sobering sight; a piece of cement floor tile in the foreground and bright sunshine bouncing off a CD behind it.
The CD was the source reflecting rainbow colors on the shelf above. That brought my day tripping to an abrupt end, until I recalled a popular song from my youth sung by my fellow traveler, Lesley Gore. It features sunshine, rainbows eventual tooth decay and can probably lead to alcoholism if heard often enough.