When I was six, I had a friend who had lots of little cars and I had only a few. We would play in the sand and make little roads. While my friend wasn't looking , I would bury some of his cars. When my friend left to go home I would dig up the cars and take them home. I think one time he realized that some of my cars were his when I took them out to play with him. I felt bad for him because he was the only child at his place and I had six siblings.
Luckily I didn't become a professional car thief.