I thought there was an unwritten rule that if you found a stone someone had painted you would pick it up and hide it somewhere else for someone else to find on their walk etc.
My SM now has a collection of painted stones she's found and leaves on her doorstep. I was round the other day and noticed the collection had grown somewhat and was quite surprised and then annoyed. She doesn't paint stones and leave them for others herself, just collects everyone elses!
AIBU??