Yes. I convinced someone to sign their name on a blank sheet of paper so I could 'examine their handwriting'... and then drew up a contract around that signature granting me ownership of that person's soul
I had a friend who liked to burn things. He was seeing a shrink about that, which was kind of rare at the time in my country. Sometimes we would burn things. My parents found out and he became persona non grata.
Have you ever ordered a tub of buttered popcorn at the theatre all for yourself? (disclaimer, I always order a tub more for taking home and enjoying later)