I was working an internship for this small company that sells all kinds of cheap products made in China and the boss had me making advertising banners for their many websites. Most of it was typical stuff like promos for sales, holiday/seasonal-themed ones.
The client came over to check on me and I showed him what I had so far.
Client: Hmmm. No. I don't like any of these pictures. Why don't you just use Google?
Me: I did. This was the best I could find.
Client: Let me check.
He sat next to me and did a basic Google image search with no Creative Commons filter.
Client: Oh, hey, see? THIS one's better.
Me: Yeah but that might be copyrighted. If it didn't show up when I used the Creative Commons filter, that usually means it's copyrighted.
Client: Naw, I can usually tell whether an image is copyrighted or not. I'll check it.
He then stared at the image for a few seconds while I watched in disbelief.
Client: Nope! It's not copyrighted!
Thankfully I found a similar image that WAS okay to use because sorry but I am NOT risking my neck on your "magic vision."