Shoes with wheels in them.
I got some of those shoes with the wheels in the bottom, and I was racing down the sidewalk with them when a cop pulled up next to me with his lights on. He started telling me I wasn't allowed to ride my wheeled-shoes down the sidewalk, since it's only for pedestrians. I was getting worried that he was going to write me a ticket, but then he was like, "I'm just kidding, man, check this out!" He got out of his car and I saw that he had some shoes with wheels in them, too. He offered to race me around, but he was a lot faster than I was since I just got mine.